xref: /netbsd-src/external/bsd/nsd/dist/doc/ChangeLog (revision 811a4a0195236f69295602fbee687a174d42af9b)
129 November 2023: Wouter
2	- Tag for 4.8.0rc1.
3
428 November 2023: Wouter
5	- Set up doc/RELNOTES for upcoming release.
6	- Fix unit test kill_from_pidfile function for nonexistent files
7	  because the argument is evaluated before the test expression.
8	- Fix rr-test to also convert the contents of the just written output
9	  file.
10	- Fix test set to remove -f nsd.db and rm nsd.db commands.
11	- Fix test set to remove difffile option.
12
1327 November 2023: Jeroen
14	- Fix #14: Set timeout to 3s when servicing remaining TCP connections.
15	- Fix: Always instate write handler after reading queries from TCP.
16	- Answer first query on connections accepted just before reload.
17
1827 November 2023: Wouter
19	- Merge #305: faster stats. Statistics can be gathered while a reload
20	  is in progress.
21
2227 November 2023: Willem
23	- Merge #302: Test package fixes. Correct Auxfiles, kill_from_pidfile
24	  function and fix drop_updates, rr-test and xfr_update tests.
25
261 November 2023: Jeroen
27	- Remove on-disk database.
28
2931 October 2023: Wouter
30	- Merge #301: improve the logging of ixfr fallbacks to axfr.
31
3230 October 2023: Jeroen
33	- Fix processing of consolidated IXFRs.
34
3530 October 2023: Wouter
36	- Fix for interprocess communication to set quit sync command from
37	  main process explicitly.
38
393 October 2023: Wouter
40	- Merge #281: Proxy protocol. An implementation of PROXYv2 for NSD.
41	  It can be configured with proxy-protocol-port: portnum with the
42	  port number of the interface on which proxy traffic is handled.
43	  The interface can support proxy traffic for UDP, TCP and TLS.
44
4521 September 2023: Wouter
46	- Merge #295: Update e-mail addresses, add ref to support contracts
47
4831 August 2023: Wouter
49	- Fix autoconf 2.69 warnings in configure.
50
5114 July 2023: Wouter
52	- Merge #287: Update nsd.conf.5.in.
53
5411 July 2023: Wouter
55	- Fix unused variable warning in unit test of udb.
56
5722 June 2023: Wouter
58	- Fix #284: dnstap_collector.c: SOCK_NONBLOCK is not available on
59	  Mac/Darwin.
60
617 June 2023: Wouter
62	- Merge #282: Improve nsd.conf man page.
63	- Fix unused but set variable warning.
64	- Fix #283: Compile failure in remote.c when --disable-bind8-stats
65	  and --without-ssl are specified.
66
6731 May 2023: Wouter
68	- Add missing items to doc/RELNOTES.
69	- Tag for 4.7.0rc1. It became release 4.7.0 on 7 june 2023. The code
70	  repository continues with 4.7.1.
71
7230 May 2023: Jeroen
73	- Fix #240: Prefix messages originating from verifier.
74	- Fix #275: Drop unnecessary root server checks.
75
7630 May 2023: Wouter
77	- Next version is 4.7.0, instead of 4.6.2, because of the added
78	  features, like TLS for DNSTAP.
79	- Fix unused variable warning in unit test, from clang compile.
80
8124 May 2023: Wouter
82	- For #279: Note that autoreconf -fi creates the configure script
83	  and also the needed auxiliary files, for autoconf 2.69 and 2.71.
84
854 May 2023: Wouter
86	- Fix to remove unused whitespace from acx_nlnetlabs.m4 and config.h.
87
881 May 2023: Wouter
89	- make depend.
90	- Fix for build to run flex and bison before compiling code that needs
91	  the headers.
92
9313 April 2023: Wouter
94	- Fix cirrus script for submit to coverity scan to libtoolize
95	  the configure script components config.guess and config.sub.
96	- Fix readme status badge links.
97
9828 March 2023: Wouter
99	- Fix #273: Large TXT record breaks AXFR.
100	- Fix ixfr create from adding too many record types.
101
10216 March 2023: Wouter
103	- Fix include brackets for ssl.h include statements, instead of quotes.
104	- Fix static analyzer warning about nsd_event_method initialization.
105
10615 March 2023: Wouter
107	- Dnstap tls code fixes.
108
10914 March 2023: Wouter
110	- Fix dnstap to not check socket path when using IP address.
111	- dnstap over TLS, default enabled. Configured with the
112	  options dnstap-tls, dnstap-tls-server-name, dnstap-tls-cert-bundle,
113	  dnstap-tls-client-key-file and dnstap-tls-client-cert-file.
114	- Fix to compile without ssl with dnstap-tls code.
115
1169 March 2023: Wouter
117	- Fix #271: DNSTAP over TCP, with dnstap-ip: "127.0.0.1@3333".
118	- Fix to clean more memory on exit of dnstap collector.
119
12023 February 2023: Wouter
121	- Fix #270: reserved identifier violation.
122
12320 February 2023: Wouter
124	- Merge #269 from Fale: Add systemd service unit.
125
12616 February 2023: Wouter
127	- Fix #266: Fix build with --without-ssl.
128	- Fix #267: Allow unencrypted local operation of nsd-control.
129	- Fix for #267: neater variable definitions.
130
1312 February 2023: Wouter
132	- Merge #265: Fix C99 compatibility issue.
133
13430 January 2023: Wouter
135	- Merge #263: Add bash autocompletion script for nsd-control.
136	- Fix for #262: More error logging for SSL read failures for zone
137	  transfers.
138
13927 January 2023: Wouter
140	- Fix #262: Zone(s) not synchronizing properly via TLS.
141	- Fix ixfr_and_restart test to wait for processes to come to a stop.
142
14326 January 2023: Wouter
144	- Fix configure for -Wstrict-prototypes.
145
14610 November 2022: Wouter
147	- Tag for NSD 4.6.1, the repository continues with version 4.6.2.
148	- Fix #239: -Wincompatible-pointer-types warning in remote.c.
149	- Fix unit tests to succeed with --disable-bind8-stats.
150
1511 November 2022: Wouter
152	- Fixup for non-trailing newline lexer change warnings.
153	- Update doc/RELNOTES for changes.
154	- Fix ixfr_gone unit test to not use system default zone list file.
155	- Fix credns tests for vm usage, and not use system default zone
156	  list file.
157	- Fix verify tests to use more portable bash location in script.
158	- Fix verify_again test to use ipv4 address for test.
159
1601 November 2022: Tom
161	- Add SVCB dohpath support
162
16328 September 2022: Jeroen
164	- Set ALPN "dot" token during connection establishment as per RFC9103
165	  section 7.1 (Thanks Cesar Kuroiwa).
166
16721 September 2022: Tom
168	- Change zone parsing to accept non-trailing newline.
169
1701 September 2022: Wouter
171	- Merge #231 from moritzbuhl: Fix checking if nonblocking sockets work
172	  on OpenBSD.
173
17419 August 2022: Wouter
175	- Update cirrus build script for newer Ubuntu image, and FreeBSD
176	  build with libtoolize to install auxiliary files.
177	- Update to clang 14 in cirrus build test on Ubuntu Jammy 22.04.
178
1797 July 2022: Tom
180	- Fix #212: Change commandline control actions to always log.
181
1821 July 2022: Wouter
183	- Fix static analyzer reports, fix wrong log print when skipping xfr,
184	  fix to print error on pipe read fail, and assert an xfr is in
185	  progress during packet checks.
186
18723 June 2022: Wouter
188	- Tag for 4.6.0rc1. It became 4.6.0 on 30 June 2022, and it continues
189	  with version 4.6.1.
190
19117 June 2022: Wouter
192	- Fix compilation with libev, without event_base_loopbreak.
193
19416 June 2022: Wouter
195	- Fix that the unit test verify_repat cleans up nsd on exit.
196	- Fix to remove ixfrcreate.c asserts about uint16 within limits
197	  because of warnings from analyzers.
198
19914 June 2022: Wouter
200	- Fix compilation without libevent and compilation of nsd-mem.
201	- Fix verify handler add of sigchld event for compilation without
202	  libevent.
203
2043 June 2022: Wouter
205	- Fix static analyzer reports on ixfrcreate temp file.
206	- Fixup wrong ixfrcreate fread return check.
207
20813 May 2022: Wouter
209	- The code repo continues with version 4.5.1.
210
2116 May 2022: Wouter
212	- Merge PR #209: IXFR out
213	  This adds IXFR out functionality to NSD. NSD can copy IXFRs from
214	  upstream to downstream clients, or create IXFRs from zonefiles.
215	  The options store-ixfr: yes and create-ixfr: yes can be used to
216	  turn this on. Default is turned off. The options ixfr-number and
217	  ixfr-size can be used to tune the number of IXFR transfers and
218	  total data size stored. This is configured per zone, the IXFRs
219	  are served to the hosts that are allowed to perform zone transfers.
220	  And if TSIG is configured, signed with the same key. The content
221	  is stored to file if a zonefile is configured for the zone, in
222	  the zonefile.ixfr and zonefile.ixfr.2, .. files. They contain
223	  readable text format. The number of IXFRs is num.rixfr in
224	  statistics output, also per zone if per zone statistics are enabled.
225	  If offline, nsd-checkzone -i can create ixfr files.
226	  NSD already supports requesting IXFRs, this addition allows NSD
227	  to serve IXFR transfers to clients.
228	  NSD stops responding with NOTIMPL to IXFR requests, also for zones
229	  that do not have IXFR enabled. The clients gets a full zone reply
230	  or a status reply if the serial is up to date.
231	- set version to 4.5.0 for feature change.
232	- Tag for 4.5.0rc1 release. It became the 4.5.0 release on 13 May 2022.
233
23414 April 2022: Wouter
235	- Update cirrus script FreeBSD version.
236
23725 March 2022: Wouter
238	- Fix spelling error in comment in svcbparam_lookup_key.
239
2402 March 2022: Wouter
241	- Fix code analyzer zero divide warning.
242	- Fix code analyzer large value with assertion.
243	- Fix another code analyzer zero divide warning.
244	- Fix code analyzer warning about uninitialized temp storage in loop.
245
24610 February 2022: Wouter
247	- Tag for 4.4.0rc1 release. This became 4.4.0 release on 17 Feb 2022,
248	  the code repository continues with version 4.4.1.
249
2509 February 2022: Wouter
251	- Fix unit tests for nds-control-setup exit code and the
252	  xfrd-tcp-max default.
253
2547 February 2022: Wouter
255	- Merge #207 Sync nsd-control-setup with unbound-control-setup to
256	  generate certificates with SANs.
257
25828 January 2022: Wouter
259	- Fix #206: build with --without-ssl fails.
260
26127 January 2022: Wouter
262	- current code branch continues as version 4.4.0, because of added
263	  feature.
264
26526 January 2022: Wouter
266	- Merge #193: Lower memory usage of the XFRD process by default.
267	  Instead of preallocating all elements, they are allocated when used.
268	  There are options for managing the memory usage, defaults are the
269	  same as before. xfrd-tcp-max sets the number of sockets for tcp
270	  connections that xfrd can make to download zone contents. And
271	  xfrd-tcp-pipeline the number of simultaneous transfers over the
272	  same connection.
273
27412 January 2022: Wouter
275	- Fix to document nsd-checkzone -p in the man page for nsd-checkzone.
276
2777 January 2022: Wouter
278	- Fix to change file mode before changing file owner for the
279	  nsd-control unix socket file.
280
2813 January 2022: Wouter
282	- Merge #204 from jonathangray: correct some spelling mistakes.
283
28415 December 2021: Wouter
285	- Fix #200: nsd-checkzone succeeds even with incorrect serial in SOA
286	  record.
287
2882 December 2021: Wouter
289	- Fix socket_partitioning unit test for FreeBSD.
290	- Fix SVCB test to work around older dig with drill.
291	- Fix unit test to not syslog setlogin failures.
292
2931 December 2021: Wouter
294	- Set up for branch for 4.3.9 release.
295	  This became release 4.3.9 on 9 Dec 2021 and included the changes
296	  until the SVCB fix on 2 dec 2021, but not the setlogin fix.
297	  The main branch continues as 4.3.10.
298	- Fix unit tests for new answer-cookie default.
299
30030 November 2021: Wouter
301	- Fix to remove git tracking and ci information from release tarballs.
302
3033 November 2021: Wouter
304	- Fix #198: nsd-control reconfig core dump.
305
30612 October 2021: Wouter
307	- Tag for 4.3.8 release, from 4.3.8rc2. The main branch continues
308	  with version 4.3.9 in development.
309
3107 October 2021: Wouter
311	- Set default for answer-cookie to no. Because in server deployments
312	  with mixed server software, a default of yes causes issues.
313	- Tag for 4.3.8rc2, includes the new answer-cookie default.
314
3154 October 2021: Wouter
316	- Tag for 4.3.8rc1.
317
31829 September 2021: Wouter
319	- Fix unit tests for svcb and xot to not touch the default
320	  zonelistfile.
321	- Fix unit test for xot tertiary config for zonelistfile default.
322	- Fix unit test for dns-cookies for no unshare, and allow-query
323	  for no IPv6 loopback.
324	- Fix unit test allow query to check for IPv6.
325
32622 September 2021: Wouter
327	- Fix #194: Incorrect NSEC3 response for SOA query below delegation
328	  point.
329
33013 September 2021: Wouter
331	- Fix compile failure with openssl 1.0.2.
332
3333 September 2021: Wouter
334	- Fix not reachable annotation in radix_find_prefix_node.
335
33631 August 2021: Willem
337	- Fix #191: dname_parse_wire() returns fqdn wireformat length.
338
33926 August 2021: Wouter
340	- Fix #190: NSD returns 3 NSEC3 records for NODATA response.
341
34223 August 2021: Wouter
343	- Fix #189: nsd 4.3.7 crash answer_delegation: Assertion
344	  `query->delegation_rrset' failed.
345
34617 August 2021: Wouter
347	- Fix #188: NSD fails to build against openssl 1.1 on CentOS 7.
348	- Fix sed script in ssldir split handling.
349
35013 August 2021: Wouter
351	- Merge #187: Support using system-wide crypto policies.
352
35310 August 2021: Wouter
354	- Merge #185 by cesarkuroiwa: Mutual TLS.
355	- Fixes for #185: Document client-cert, client-key and client-key-pw
356	  in the man page. Fix yacc semicolon. Fix unused variable warning.
357	  Use strlcpy instead of strncpy. Fix spelling error in error
358	  printout.
359
3602 August 2021: Wouter
361	- Quieter tpkg/do-tests shell script with -q flag.
362	- For #184: Note that all zones can be targeted by some nsd-control
363	  commands in the man page.
364
36530 July 2021: Wouter
366	- Move acx_nlnetlabs.m4 to version 41, with lib64 openssl dir check.
367	- Fix to compile with OpenSSL 3.0.0beta2.
368	- Fix configure detection of SSL_CTX_set_security_level.
369	- Fix deprecated functions use from openssl 3.0.0beta2.
370
37123 July 2021: Wouter
372	- Fix free on shutdown of XoT SSL context.
373
37422 July 2021: Wouter
375	- tag 4.3.7 release, with the fixes between rc1 and this release.
376	- main branch continues for 4.3.8.
377
37820 July 2021: Wouter
379	- Fix typo in xfrd-tcp.c.
380
38115 July 2021: Wouter
382	- tag for 4.3.7rc1.
383	- Fix compile of cookies on FreeBSD without IPv6.
384	- Fix for loop initial declaration for nonc99 compiler.
385
38614 July 2021: Wouter
387	- Fix truncate test for EDNS COOKIE making one less RR is added.
388	- Attempt to fix gcc11 warning.
389
39013 July 2021: Willem
391	- Fixes for child server processes getting out of sync with the
392	  dnstap-collector process
393
39413 July 2021: Willem
395	- Interoperable DNS Cookies support as per RFC7873 and RFC9018
396
3979 July 2021: Willem
398	- Client side DNS Zone Transfer-over-TLS (XoT) support as per
399	  draft-ietf-dprive-xfr-over-tls
400
40129 June 2021: Willem
402	- Fix #168: Buffer overflow in the dname_to_string() function
403
40414 June 2021: Wouter
405	- Update configure nonblocking test to use host.
406
40725 May 2021: Wouter
408	- Fix #179: log notice and server-count.
409
41021 May 2021: Wouter
411	- Test code has -q option for quiet output.
412
41317 May 2021: Wouter
414	- Update the ACX_CHECK_NONBLOCKING_BROKEN test for the configure
415	  script.
416
4177 May 2021: Wouter
418	- Fix #176: please review Loglevel on missing zonefile.
419
4206 May 2021: Wouter
421	- Fix #174: NS Records below delegation are not ignored (nsd-checkzone
422	  also does not raise any issue).
423
4244 May 2021: Wouter
425	- Fix SVCB sort call sizeof to be the size of the elements sorted.
426
42729 April 2021: Tom
428	- Implement Syntax of SVCB and HTTPS RR type as per draft-ietf-dnsop-svcb-https
429
43013 April 2021: Wouter
431	- Fix for #128: Skip over sendmmsg invalid argument when port is zero.
432	- Fix #171: Invalid negative response (NSEC3) after IXFR.
433	- Fix to make nsec3_chain_find_prev return NULL if one nsec3 left.
434	- remove debug settings from unit test.
435
4369 April 2021: Wouter
437	- Fix for #170: Fix build warnings when IPv6 is disabled.
438	- Fix #170: Disabled IPv6 and DNSTAP enabled triggers a build error.
439
44030 March 2021: Wouter
441	- Fix configure failure for enable systemd because of autoconf.
442	- This became release 4.3.6, the repository continues for 4.3.7
443	  in development.
444
44529 March 2021: Wouter
446	- Note unlisted changes in RELNOTES and prepare for 4.3.6rc1 tag.
447
44829 March 2021: Willem
449	- Per zone Access Control List for queries
450	  with an allow-query: option.
451
45224 March 2021: Wouter
453	- Update acx_nlnetlabs.m4 to version 38, fix deprecation test.
454	- Fix configure to use header checks with compile.
455	- Fix warning about unused function log_addr.
456
45718 March 2021: Tom
458	- Add Extended DNS Errors RFC8914
459
46015 March 2021: Wouter
461	- Fix double config.h include in configlexer.c
462	- Fix to remove configyyrename from makedist.sh and also
463	  update the flex and bison rules there to add the "c_" prefix.
464
46513 March 2021: Willem
466	- Fix #154: TXT with parentheses fails in 4.3.5.
467	- Align parsing of TXT elements with how bind does it.
468	- A -p option to nsd-checkzone to print a successfully read zone.
469
47012 March 2021: Wouter
471	- Fix that wildcard is printed as a star instead of escaped, in
472	  logs and in written zone files.
473	- Fix unit test for wildcard printout change.
474
47511 March 2021: Wouter
476	- Fix #163: A TSIG noncompliance with RFC 2845.
477
4789 March 2021: Willem
479	- Enable configuring a control-interface by interface name.
480
48119 February 2021: Wouter
482	- Fix segfault on high verbosity for TLS channels with dnstap log
483	  local address.
484
48518 February 2021: Wouter
486	- Fix #146 with #147: DNSTAP log the local address of the server
487	  with the dnstap logs.
488
48916 February 2021: Wouter
490	- Man page documentation for dnstap options.
491
4928 February 2021: Wouter
493	- Fix AF_LOCAL compile error for Solaris.
494	- Fix ifaddrs compile error for Solaris.
495	- Fix ifaddrs.h compile error for Solaris.
496
4974 February 2021: Wouter
498	- Merge PR #153 from fobser: Repair -fno-common linker errors
499	  automatically.
500	- Fix uninitialized access of log_buf in error printout on apply ixfr.
501
50226 January 2021: Wouter
503	- Prevent a few more yacc clashes.
504
50519 January 2021: Wouter
506	- Set branch ready for 4.3.5 release.  Tag for 4.3.5rc1.
507	  Became the 4.3.5 release on 26 january 2021.  This branch continues
508	  with 4.3.6 in development.
509
51015 January 2021: Wouter
511	- Fix #152: '*' in Rdata causes the return code to be NOERROR instead
512	  of NX.
513	- Add config.guess and config.sub to .gitignore for autoconf 2.70.
514	- Fix #150: TXT record validation difference with BIND.
515	- Fixup TXT record validation fix for escaped quotes.
516	- Fixup TXT record validation fix for escaped backslashes.
517	- Fixup escape character parse for quoted strings.
518
51911 January 2021: Wouter
520	- Fix #151: DNAME not applied more than once to resolve the query.
521	- Fix dname test for #148.
522	- For #151: fix to not produce loops in output.
523
5245 January 2021: Wouter
525	- Fix configure.ac for autoconf 2.70.
526
5274 January 2021: Wouter
528	- Fix #148: CNAME need not be followed after a synthesized CNAME
529	  for a CNAME query.
530
53111 December 2020: Wouter
532	- Fix that nsd-control has timeout when connection is down.
533	- remove windows socket ifdefs from nsd-control.
534
5353 December 2020: Wouter
536	- For #145: Fix that service of remaining TCP and TLS connections
537	  does not allow new queries to be made, the connection is closed.
538	  Only existing queries and zone transfers are answered, new ones
539	  are rejected by a close of the channel.
540
54130 November 2020: Wouter
542	- Fix #144: fix better.
543
54427 November 2020: Wouter
545	- Fix #144: Typo fix in nsd.conf.5.in.
546
54726 November 2020: Wouter
548	- Fix #143: xfrd no hysteresis with NOT IMPLEMENTED rcode.
549
55024 November 2020: Wouter
551	- Merge PR #141: ZONEMD RR type.
552	- tag for 4.3.4rc1.  This became 4.3.4 release on 1 dec 2020.
553	  The code repo continues for 4.3.5 in development.
554
55523 November 2020: Wouter
556	- Fix #142: NODATA answers missin SOA in authority section after
557	  CNAME chain.
558	- Fix for CVE-2020-28935 : Fix that symlink does not interfere
559	  with chown of pidfile.
560	- fix writepid for retvalue 0.
561
5629 November 2020: Wouter
563	- Fix #138: NSD returns non-EDNS answer when QUESTION is empty.
564	- Fix to check nscount in previous fix for EDNS in formerr response
565	  when there is no question.
566
56728 October 2020: Wouter
568	- Remove unused init_cfg_parse routine from configlexer.
569
57020 October 2020: Wouter
571	- Fix to add missing closest encloser NSEC3 for wildcard nodata type
572	  DS answer.
573
57414 October 2020: Wouter
575	- Fix #134: IPV4_MINIMAL_RESPONSE_SIZE vs EDNS_MAX_MESSAGE_LEN.
576
57713 October 2020: Wouter
578	- Fix missing parenthesis on size of fix to init buffer.
579
58012 October 2020: Wouter
581	- Fix #127: two minor `-Wcast-qual` cleanups
582	- Fix #126: minor header hygiene
583	- Fix #125: include config.h in compat/setproctitle.c and fix prototype of `setproctitle`
584	- Fix #133: fix 0-init of local ( stack ) buffer.
585
5868 October 2020: Wouter
587	- tag for 4.3.3 release
588	- current repository contains 4.3.4 in development.
589	- Fix #129: ambiguous use of errno, in log message if sendmmsg fails.
590	- Fix #128: Fix that the invalid port number is logged for sendmmsg
591	  failed: Invalid argument.
592
5931 October 2020: Wouter
594	- tag for 4.3.3rc1 release.
595
59630 September 2020: Wouter
597	- Updated date in nsd -v output.
598	- Fixup bug013_truncate, checkconf and cutest_qroot tests for new
599	  default EDNS size.
600
60129 September 2020: Willem
602	- Follow DNS flag day 2020 advice and
603	  set default EDNS message size to 1232.
604
6054 September 2020: Wouter
606	- Remove unused space from LIBS on link line.
607
6083 September 2020: Wouter
609	- Merge PR #121: Increase log level of recreated database from
610	  WARNING to ERR.
611
6121 September 2020: Wouter
613	- Fix #119: fix compile warnings from new gcc.
614	- Fix #119: warn when trying to parse a directory.
615
61627 August 2020: Wouter
617	- Merged PR #113 with fixes.  Instead of listing an IP-address to
618	  listen on, an interface name can be specified in nsd.conf, with
619	  ip-address: eth0.  The IP-addresses for that interface are then used.
620
62126 August 2020: Wouter
622	- Add xstrdup for PR #113.
623	- Tidy up code like in PR #113.
624	- Import code from PR #113.
625	- Fix for unknown EVP_MAC_CTX_free function in openssl 3.0.0 tsig code.
626
62724 August 2020: Wouter
628	- Fix that configure checks for EVP_sha256 to detect openssl, because
629	  HMAC_CTX_new is deprecated in 3.0.0.
630	- Port TSIG code for openssl 3.0.0-alpha6.
631	- Sync acx_nlnetlabs.m4 with the unbound repo.
632	- Review fixes for tsig, defensive free and zero.
633
6344 August 2020: Wouter
635	- Merge #117: mini_event.h (4.3.2 and 4.3.1) on OpenBSD cannot find
636	  fd_set - patch.
637
63823 July 2020: Wouter
639	- Merge #115 from millert: Fix strlcpy() usage. From OpenBSD.
640
64115 July 2020: Wouter
642	- Fix make install with --with-pidfile="".
643
64414 July 2020: Wouter
645	- Tag for 4.3.2 release.  Master branch contains the next version
646	  in development, 4.3.3.
647
6487 July 2020: Wouter
649	- Tag for 4.3.2rc1.
650
6516 July 2020: Wouter
652	- Fix compile includes for xfr-inspect tool on FreeBSD.
653	- Add tpkg/run_vm.sh that runs test when in a virtual machine.
654	- Merge #112 from jaredmauch: log old and new serials when NSD
655	  rejects an IXFR due to an old serial number.
656	- Fix bug034 test for vm test changes.
657
65822 June 2020: Wouter
659	- Remove errno reset behaviour from sendmmsg and recvmmsg
660	  replacement functions.
661	- Fix unit test for different nsd-control-setup -h exit code.
662
66319 June 2020: Wouter
664	- Merge #108 from Nomis: Make the max-retry-time description clearer.
665	- Retry when udp send buffer is full to wait until buffer space is
666	  available.
667
66818 June 2020: Wouter
669	- Do not log EAGAIN errors for sendmmsg, to stop log spam on OpenBSD.
670
67117 June 2020: Wouter
672	- Fix #107: nsd -v shows configure line, openssl version and libevent version.
673
67427 May 2020: Wouter
675	- Fix unlink of pidfile warning if not possible due to permissions,
676	  nsd can display the message at high verbosity levels.
677	- Update contrib/nsd.service for chown of nsd.log and /var/log in
678	  ReadWritePaths.
679	- Removed contrib/nsd.service, example is too complicated and not
680	  useful.
681
68215 May 2020: Wouter
683	- Merge PR#102 from and0x000: add missing default in documentation
684	  for drop-updates.
685	- Fix checkconf test for log-only-syslog option.
686
68714 May 2020: Wouter
688	- Document default value for tcp-timeout.
689
69013 May 2020: Jeroen
691	- Fix #99: Fix copying of socket properties with reuseport enabled.
692
69324 April 2020: Wouter
694	- Fix #97: EDNS unknown version: query not in response.
695
69621 April 2020: Wouter
697	- Fix #96: log-only-syslog: yes sets to only use syslog, fixes
698	  that the default configuration and systemd results in duplicate
699	  log messages.
700
70120 April 2020: Wouter
702	- Fix #95: Removed make test check because tpkg not included in
703	  release tarballs.
704	- Fix unused parameter compile warnings.
705
70616 April 2020: Wouter
707	- Tag for 4.3.1 release and track 4.3.2 release in code repository.
708	- note sha256 digest algo use in makedist.sh.
709	- Fix for posix shell syntax for trap in nsd-control-setup.
710	- Fix to omit the listen-on lines from log at startup, unless verbose.
711	- Fix uninitialised values for bindtodevice option at startup with
712	  reuseport and multiple interfaces.
713
7148 April 2020: Wouter
715	- Tag for 4.3.1rc2.
716
7177 April 2020: Wouter
718	- Merge PR #91 by gearnode: nsd-control-setup recreate certificates.
719	  The '-r' option recreates certificates.  Without it it creates them
720	  if they do not exist, and does not modify them otherwise.
721
7226 April 2020: Wouter
723	- Merge PR #90 by phicoh: O_CLOEXEC should be FD_CLOEXEC.
724	- Merge PR #92 by tonysgi: Fix typo.
725
7262 April 2020: Wouter
727	- Tag for 4.3.1rc1.
728
7291 April 2020: Wouter
730	- Fix for whitespace in minimal responses test for FreeBSD.
731
73225 March 2020: Wouter
733	- Merge PR #86 from noloader: Use precious variables for GREP, EGREP,
734	  SED, AWK, LEX and YACC.
735	- For PR #86: Fix that programs loaded after CFLAGS and stuff is
736	  set, specifically the compiler, so that it can work if it needs
737	  special flags from that.  Fix that lex only needs to support -i
738	  if actually defined, otherwise the output included in the source
739	  tarball can be used.
740	- Merge PR #72 from noloader: Increase Travis testing coverage
741
74223 March 2020: Wouter
743	- Fix unterminated ifdef in nsd.h.
744	- Fix unknown u_long in util.c for Issue #80 .
745
74620 March 2020: Wouter
747	- Merge PR #83 from noloader: Fix GNU HURD sched_setaffinity compile.
748	- Fix #82: print error when system does not have setaffinity.
749	- Fix #80: NetBSD and implicit declaration of reallocarray.
750	- Fix for #80: Fix reallocarray test to define before include.
751	- Fix for #80: Define alternatives for IFNAMSIZ if it does not exist.
752
75319 March 2020: Wouter
754	- Fix #76: cpuid typedef for Hurd, DragonflyBSD compile.
755	- Fix #75: configure test for sched_setaffinity, and use
756	  cpuset_setaffinity otherwise.  Also test for presence of sysconf.
757	- Fix #74: GNU Hurd fix cast from pointer to integer of different size.
758	- Fix for #74, #75: cpuset test for header contents and provide code.
759	- Fix #78: Fix SO_SETFIB error on FreeBSD.
760
76118 March 2020: Wouter
762	- Fix #70: error: 'fd_set' undeclared.
763	- Fix #71: error: 'for' loop initial declaration used outside C99
764	  mode.
765	- Fix to move declarations out of for loops in event test too.
766	- Fix to move declarations out of for loops in popen3 test too.
767	- Another fix to move declaration out of for loop for event test.
768	- Fix to move declarations out of for loops in cutest regex display.
769
77017 March 2020: Wouter
771	- tag for 4.3.0 release and master branch has version 4.3.1.
772
77310 March 2020: Wouter
774	- repository has version number 4.3.0.  Tag for 4.3.0rc1.
775
7763 March 2020: Wouter
777	- Fix that the retry wait does not exceed one day for zone transfers.
778
77927 February 2020: Wouter
780	- Fix warning on FreeBSD about pointer size cast.
781
78226 February 2020: Wouter
783	- Fixup fix of reuseport TCP for server close of sockets not used
784	  by it.  And the unit test skips when the necessary debug output
785	  is not enabled.
786
78725 February 2020: Wouter
788	- Fix event unit test, signal has to be registered with signal_add,
789	  event_add not for every backend for signals.  The event_initialized
790	  is not possible for every backend, so event_added variable.  The
791	  agent write event fires after a timeout, instead of on event write
792	  so that it does not trigger a sigpipe event when the handlers stop.
793	  Timeout shorted to 0.1 second.  event_get_fd was not implemented,
794	  so used ev_fd.  Debug output printfs added to see what happens.
795	- Fix checkconf test for new drop-updates config option.
796	- Fix errors with reuseport and TCP file descriptors, it was
797	  closing them for server-1 in server-2 and server-3..
798
7997 February 2020: Jeroen
800	- Add feature to drop queries with opcode UPDATE.
801
8026 February 2020: Jeroen
803	- Support SO_BINDTODEVICE on Linux. Specify bindtodevice: yes
804	  to bind sockets directly to the network interface.
805	- Support SO_SETFIB on FreeBSD. Add setfib=<FIB> after an ip-address
806	  option to use the specified FIB for that socket.
807	- Require user to add servers=<range> after an ip-address option to
808	  specify the servers that must listen on that socket.
809
8106 February 2020: Wouter
811	- Merge PR#60: Minor portability fixes from michaelforney, with
812	  avoid pointer arithmetic on void* and avoid unnecessary VLA.
813
8144 February 2020: Wouter
815	- Merge PR#22: minimise-any: prefer polular and not large RRset,
816	  from Daisuke Higashi.
817	- Fix responses for IXFR so that the authority section is not echoed
818	  in the response.
819
82021 January 2020: Wouter
821	- Fix leak in server bitset setup.
822
82316 January 2020: Jeroen
824	- Add zone resource record iterator for future zone-verification port.
825	- Set FD_CLOEXEC on opened sockets.
826	- Add popen3 implementation for future zone-verification port.
827	- Add -r option to cutest so that a subset of tests can be run.
828
82915 January 2020: Jeroen
830	- Add feature to pin server proccesses to specific cpus.
831	- Add feature to pin IP addresses to selected server processes.
832	- Set process title to identify individual processes.
833
83413 January 2020: Wouter
835	- Merge pull request #59 from buddyns: add FreeBSD support
836	  for conf key ip-transparent.
837
83810 January 2020: Wouter
839	- Fix unreachable code in ssl set options code.
840	- Fix bad shift in assertion code analyzer complaint.
841
8426 January 2020: Wouter
843	- Fix #56: Drop sparse TSIG signing support in NSD.
844	  Sign every axfr packet with TSIG, according to the latest
845	  draft-ietf-dnsop-rfc2845bis-06, Section 5.3.1.
846
84712 December 2019: Wouter
848	- Note that use-systemd is not necessary and ignored in man page.
849
85011 December 2019: Wouter
851	- Fix whitespace in nsd.conf.sample.in, patch from Paul Wouters.
852	- use-systemd is ignored in nsd.conf, when NSD is compiled with
853	  libsystemd it always signals readiness, if possible.
854
8559 December 2019: Wouter
856	- Fix to define upper bounds on rr counts read from untrusted packet
857	  data.
858	- Try different annotation for radix_find_prefix_node not reachable.
859	- Separate acl_addr_match_range functions for ip4 and ip6, to
860	  please checkers.
861	- Avoid unused variable warning in new match_range_v4 function.
862
8636 December 2019: Wouter
864	- Fix to define max number of EDNS records we are willing to
865	  spend time on.
866	- Fix size of string len and capacity type cast in udbradtree.
867	- Fix to protect rrcount in tsig_find_rr from overflow.
868	- Annotate radix_find_prefix_node not reachable trail code.
869	- Fix to protect rrcount in packet_find_notify_serial from overflow.
870	- Fix to close socket on error in create_tcp_accept_sock.
871	- Fix to log on failure to chmod for socket for remote control.
872	- Fix to remove unneeded if in open of socket for remote control.
873	- Fix to restore input parameter on call failure in create_dirs.
874	- Please checker by terminating and initialising string read
875	  by remote control.
876	- Fixup of random_generate negative modulo, from previous commit,
877	  and return srandom when random is used if no getrandom.
878
8795 December 2019: Wouter
880	- Fix fname null check of fname in namedb_read_zonefile.
881	- Fix implicit cast of size in udb_radnode_array_grow.
882	- Fix ignore of return value of ssl_printf in remote.c.
883	- Fix unused check of fd in parent_handle_reload_command.
884	- Fix to use getrandom() for randomness, if available.
885	- Attempt to fix signedness of nscount lookup in ixfr query_process.
886	- Fix identical branches for ssl_print of errors in remote.c.
887	- Fix type cast bounds, signedness of opt_rdlen in edns_parse_record.
888	- Fix to separate header and data lines in parse_zone_list_file.
889
8903 December 2019: Wouter
891	- Fix #52: do not log transient network full errors unless higher
892	  verbosity is set.
893	- Fix checkconf test for new error output string.
894	- tag for 4.2.4rc1 release.  This became the 4.2.4 release,
895	  and the master branch continues with 4.2.5 in development.
896
89727 November 2017 Jeroen
898	- Fix regressions in configparser.y
899
90022 November 2019: Wouter
901	- Fix #48: Add make distclean that removes config.h made by configure.
902	  And add maintainer-clean that removes bison and flex output.
903
90418 November 2019: Wouter
905	- Detect fixed time memcmp for openssl 0.9.8 compatibility.
906	- Detect EC_KEY_new_by_curve_name for openssl 0.9.8.
907	- include limits.h for UINT_MAX.
908	- If no recvmmsg, dont use msg_flags member, but errno for error,
909	  where our fallback function left it, msg_flags also does not exist
910	  on some systems.
911	- Remove unused variable warning for portability.
912
91314 November 2019: Wouter
914	- Fix checkconf test with filenames that sort in the same order.
915	- Tag for 4.2.3rc1.  Branch master is 4.2.4 in development.
916
91711 November 2019: Wouter
918	- Fix #44: document that remote-control is a top-level nsd.conf
919	  attribute.
920	- Fix compile on OSX.
921	- Fix for #44: nicer top-level clause documentation.
922
92322 October 2019: Jeroen
924	- Number of different UDP handlers has been reduced to one. recvmmsg
925	  and sendmmsg implementations are now used on all platforms.
926	  Compatible implementations are in place for systems that lack the
927	  system calls.
928	- Socket options are now set in designated functions for easy reuse.
929	- Socket setup has been simplified for easy reuse.
930	- Configuration parser is now aware of the context in which an option
931	  was specified.
932
93321 October 2019: Wouter
934	- For #21 add
935	  contrib/patch_for_s6_startup_and_other_service_supervisors.diff
936	  that adds support for readiness notification with READY_FD from
937	  Cameron Nemo.
938
93917 October 2019: Jeroen
940	- Fix #40: Merge small fixes for confine-to-zone by Greg Bock.
941
94215 October 2019: Jeroen
943	- For #39: Merge confine-to-zone feature contributes by Greg Bock.
944
94526 September 2019: Wouter
946	- Fix #38: log address and failure reason with tls handshake errors,
947	  squelches (the same as unbound) some unless high verbosity is used.
948	- Fixup clang analysis warning in xfrd_parse_received_xfr_packet
949	  master dereference.
950
95125 September 2019: Wouter
952	- The nsd.conf includes are sorted ascending, for include statements
953	  with a '*' from glob.
954
95516 September 2019: Wouter
956	- Fixup warnings during --disable-ipv6 compile.
957	- Fixup unit test executable to run without IPv6.
958
9594 September 2019: Wouter
960	- Fix #35: excessive logging of ixfr failures, it stops the log when
961	  fallback to axfr is possible. log is enabled at high verbosity.
962
9632 September 2019: Wouter
964	- For #21: pidfile "" allows to run NSD without a pidfile, for
965	  startup management tools like daemontools.
966
96728 August 2019: Wouter
968	- In tests check for tls test tool availability.
969
97019 August 2019: Wouter
971	- Tag for 4.2.2 release.  Git master contains 4.2.3 in development.
972
97313 August 2019: Wouter
974	- Fix error message for out of zone data to have more information.
975	- Tag for 4.2.2rc2.
976
97712 August 2019: Wouter
978	- Fix #33: Fix segfault in service of remaining streams on exit.
979
9806 August 2019: Wouter
981	- Tag for 4.2.2rc1.
982
9835 August 2019: Wouter
984	- PR #31: nsd-control: Add missing stdio header.
985	- PR #32: tsig: Fix compilation without HAVE_SSL.
986	- Cleanup tls context on xfrd exit.
987
98831 July 2019: Wouter
989	- Fix #29: SSHFP check NULL pointer dereference.
990	- Fix #30: SSHFP check failure due to missing domain name.
991	- Fix to timeval_add in minievent for remaining second in microseconds.
992
99322 July 2019: Wouter
994	- Set timeout for refetch immediately, only spread load when there
995	  are retries.
996
99719 July 2019: Wouter
998	- Set no renegotiation on the SSL context to stop client
999	  session renegotiation.
1000
100118 July 2019: Wouter
1002	- Fix #25: NSD doesn't refresh zones after extended downtime,
1003	  it refreshes the old zones, with a random delay of a couple of
1004	  seconds to spread the load.
1005	- Fix so that expired zones stay expired when server is down a
1006	  long time.
1007
100817 July 2019: Wouter
1009	- Fix that NSD warns for wrong length of the hash in SSHFP records.
1010
101115 July 2019: Wouter
1012	- PR #23: Fix typo in nsd.conf man-page.
1013
10144 July 2019: Wouter
1015	- Set version to 4.2.2 in development.
1016	- clean memory on exit of nsd-checkzone for memory debug.
1017	- Fix #20: CVE-2019-13207 Stack-based Buffer Overflow in the
1018	  dname_concatenate() function.  Reported by Frederic Cambus.
1019	  It causes the zone parser to crash on a malformed zone file,
1020	  with assertions enabled, an assertion catches it.
1021	- Fix #19: Out-of-bounds read caused by improper validation of
1022	  array index.  Reported by Frederic Cambus.  The zone parser
1023	  fails on type SIG because of mismatched definition with RRSIG.
1024
10252 July 2019: Wouter
1026	- Tag for 4.2.1rc1
1027
102827 June 2019: Wouter
1029	- Fix unit test for added options and no dot after zone updated
1030	  log message.
1031	- Fix compile without accept4.
1032
103321 June 2019: Wouter
1034	- Omit remaining tcp processing if the list is empty.
1035	- Fix output of nsd-checkconf -h.
1036
103720 June 2019: Wouter
1038	- Initialize event structures before event_set, to stop uninitialized
1039	  values from setting event library lists and assertions, that would
1040	  sometimes also show after event_del.
1041	- Added num.tls and num.tls6 stat counters.
1042	- PR #12: send-buffer-size, receive-buffer-size,
1043	  tcp-reject-overflow options for nsd.conf, from Jeroen Koekkoek.
1044	- Do not use symbol from libc, instead use own replacement, if not
1045	  available, for accept4.
1046	- Fix #14, tcp connections have 1/10 to be active and have to work
1047	  every second, and then they get time to complete during a reload,
1048	  this is a process that lingers with the old version during a version
1049	  update.
1050
105119 June 2019: Wouter
1052	- Fix tls handshake event callback function mistake, reported
1053	  by Mykhailo Danylenko.
1054
105518 June 2019: Wouter
1056	- Fix #15: crash in SSL library, initialize variables for TCP access
1057	  when TLS is configured.
1058
105914 June 2019: Wouter
1060	- Fix to init event not pointer, in reassignment.
1061
106212 June 2019: Wouter
1063	- Fix to init event structure for reassignment.
1064
106511 June 2019: Wouter
1066	- NSD 4.2.0 release.  Current development is 4.2.1.
1067	- Fixup of RELNOTES, corrected RFC reference for 4892.
1068	- Fix #13: Stray dot at the end of some log entries, removes dot
1069	  after updated serial number in log entry.
1070	- Fix TLS cipher selection, the previous was redundant, prefers
1071	  CHACHA20-POLY1305 over AESGCM and was not as readable as it could be.
1072	- Consolidate server tls context create and remote control context
1073	  create, with hardening for the remote control tls context too.
1074
10756 June 2019: Wouter
1076	- NSD 4.2.0rc1 tag.
1077
10784 June 2019: Wouter
1079	- Fix unit test for outgoing interface to use random port numbers for
1080	  the outgoing interface config.
1081
108229 May 2019: Wouter
1083	- Fix to guard _OPENBSD_SOURCE from redefinition.
1084
108528 May 2019: Wouter
1086	- Fix to define _OPENBSD_SOURCE to get reallocarray on NetBSD.
1087
108816 May 2019: Wouter
1089	- Fix #10: Fix memory leaks caused by duplicate rr and include
1090	  instructions.
1091
10926 May 2019: Wouter
1093	- Note CII best practices badge for NSD on the README.md.
1094
10952 May 2019: Wouter
1096	- Fix .gitignore for unit test generated files.
1097	- Fix checkconf unit test for hide-identity and tls.
1098
10991 May 2019: Wouter
1100	- Fix makedist.sh for use with git.
1101	- Nicer output on travis for clang analysis.
1102	- Add .gitignore file to exclude built files from version tracking.
1103	- Add README.md file in repository with compile instructions.
1104	- Fix .gitignore for dnstap files and aclocal temp.
1105	- Add aclocal to README.md for pkgconfig for some configure options.
1106
110725 April 2019: Wouter
1108	- Add tls.tpkg unit test for DNS over TLS functionality.
1109
111018 April 2019: Wouter
1111	- Fix to avoid buffer alloc with global buffer in tls write handler.
1112	- Fix to initialize event structure when accepting TCP connection.
1113	- Use travis for build check, initial unit test and clang analysis.
1114	- Disable SSLv2,3,TLSv1.0,1.1 if TLS1.2 is available in libssl.
1115	- Disable weak ciphers, enable CIPHER_SERVER_PREFERENCE.
1116	- further setup ssl ctx after the keys are loaded, for ECDH.
1117	- TLS OCSP stapling support, enabled with tls-service-ocsp: filename,
1118	  patch from Andreas Schulze.
1119
112017 April 2019: Wouter
1121	- Fix to share openssl init code, and perform it once.
1122
112316 April 2019: Andreas via Sara
1124	- Patch to add support for TCP Fast Open
1125	- Patch to add support for tls service on a specified tls port
1126
112716 April 2019: Wouter
1128	- Fix #4249: The option hide-identity: yes stops NSD from responding
1129	  with the hostname for chaos class queries.  Implements the RFC4829
1130	  security considerations.
1131	- Remove starttls, this signalling method was not standardized.
1132	- Remove TO bit, this signalling method was not standardized.
1133	- Remove unused first_query and tls_ok states.
1134	- Remove sign-compare warning in tls packet send code.
1135	- Fix spelling in comment and log printout.
1136	- Fix potential uninitialized variable.
1137	- Fix documentation for DNS over TLS, and set default port 853.
1138	- Fix to add missing comment.
1139	- Fix that the TLS handshake routine sets the correct event to
1140	  continue when done.
1141	- Fix that TLS renegotiation calls the read and write routines again
1142	  with the same parameters when the desired event has been satisfied.
1143	- Fix that TCP Fastopen has better error message and supports OSX.
1144	- Fix log for fastopen with verbosity.
1145	- Squelch TLS handshake failure log until verbosity 3.
1146	- Add per-zone statistics for TLS queries, and dnstap for TLS queries,
1147	  and rcode and TCflag statistics for TCP and TLS queries.
1148
114925 March 2019: Wouter
1150	- Print IP address when bind socket fails with error.
1151
115221 March 2019: Wouter
1153	- Fix spelling error in release notes.
1154	- Fix to delete unused zparser.default_apex member.
1155
115619 March 2019: Wouter
1157	- tag 4.1.27rc1.  This became 4.1.27 on 25 March 2019 and trunk has
1158	  4.1.28 in development.
1159
116018 March 2019: Wouter
1161	- Fix unit test bug013_truncate for new truncation with EDNS size,
1162	  it is one RR smaller for the truncated response in the test.
1163
116414 March 2019: Wouter
1165	- Fixed radtree_insert memory leak.
1166	- Fixed access recycled variable.
1167
116811 March 2019: Wouter
1169	- Fix #6: nsd-control-setup: Change validity time to a shorter
1170	  period (<2038).
1171	- Fix unused definition in header remote.h.
1172	- Fix #4236: IPV4_MINIMAL_RESPONSE_SIZE=1480 is slightly too big.
1173	- Fix #4235: IP_PMTUDISC_OMIT on IPv4/UDP sockets.
1174
117518 February 2019: Wouter
1176	- Fix to remove unused code.
1177
117815 February 2019: Wouter
1179	- tentative robustness, delete stats items from list twice if needed.
1180
118114 February 2019: Wouter
1182	- Fix #4: setusercontext() is in libutil on NetBSD, and also
1183	  include login_cap.h only if it exists.
1184	- Fix #4215: fixup for state update for TSIG information in server
1185	  processes, nicer printout for tsig_print, tsig_print without
1186	  arguments and no leaks.
1187	- nicer logging for update_tsig.
1188
11891 February 2019: Wouter
1190	- Fix for tsig assoc_tsig command on acl with nokey elements.
1191
119229 January 2019: Wouter
1193	- Fix #4215: on-the-fly change of TSIG keys with patch from Igor, adds
1194	  nsd-control print_tsig, update_tsig, add_tsig, assoc_tsig
1195	  and del_tsig.  These changes are gone after reload, edit the
1196	  config file (or a file included from it) to make changes that
1197	  last after restart.
1198	- documentation for tsig nsd-control options.
1199
120024 January 2019: Wouter
1201	- Deny ANY with only one RR in response, by default.  Patch from
1202	  Daisuke Higashi.  The deny-any statement in nsd.conf sets ANY
1203	  queries over UDP to be further moved to TCP as well.
1204	  Also no additional section processig for type ANY, reducing
1205	  the response size.
1206	- assertions for clang analysis.
1207
120810 December 2018: Wouter
1209	- Fix for FreeBSD port with dnstap enabled.
1210
12116 December 2018: Wouter
1212	- Fix to reduce region_log_stats if condition, this removes a
1213	  debug statement.
1214
12155 December 2018: Wouter
1216	- Fix #4213: disable-ipv6 and dnstap compile error.
1217
12183 December 2018: Wouter
1219	- Note that the content_list member is unused; and could be removed
1220	  if the database format is modified or updated.
1221	- Fix that dnstap logs CQ and CR like BIND does.
1222	- Revert that, it looks wrong, AQ and AR are for the authoritative.
1223
122429 November 2018: Wouter
1225	- Tag for 4.1.26rc1. Which became 4.1.26 on 4 dec 2018.
1226	  Trunk has 4.1.27 in development.
1227	- Fix clang analysis warning on null in closest encloser for wildcard
1228	  denial nsec.
1229	- Fix clang analysis warnings.
1230
123127 November 2018: Wouter
1232	- Fix parsezone failure in 4194 fix.
1233
123426 November 2018: Wouter
1235	- Fix to not set GLOB_NOSORT so the nsd.conf include: files are
1236	  sorted and in a predictable order.
1237	- Added nsd-control changezone.  nsd-control changezone name pattern
1238	  allows the change of a zone pattern option without downtime for
1239	  the zone, in one operation.
1240	- Fix #3433: document that reconfig does not change per-zone stats.
1241
124220 November 2018: Wouter
1243	- Fix #4205: enable-recvmmsg in mixed IPv4/IPv6 environment fails.
1244	  This sets the msg_hdr.msg_namelen correctly after receipt.
1245
124619 November 2018: Wouter
1247	- Support SO_REUSEPORT_LB in FreeBSD 12 with the reuseport: yes
1248	  option in nsd.conf.
1249	- Fix #4202: nsd-control delzone incorrect exit code on error.
1250	- Tab style fix to use tab for 8 spaces, from Xiaobo Liu.
1251
125225 October 2018: Wouter
1253	- Adjust dnstap socket path for chroot.
1254
125522 October 2018: Wouter
1256	- Fix #4194: Zone file parser derailed by non-FQDN names in RHS of
1257	  DNSSEC RRs.
1258	- Fix some more, neater code and checks for domain length limit.
1259	- check that the dnstap socket file can be opened and exists, print
1260	  error if not.
1261
12624 October 2018: Wouter
1263	- dnstap work, the dnstap.proto is a copy of the file from Unbound,
1264	  also dnstap.m4 configure include file.
1265	- dnstap collector: free eventbase and memclean nicer.
1266	- dnstap collector: send data and read it in collector.
1267	- dnstap/dnstap.c and .h from Unbound's contribution from
1268	  Farsight Security, added to then adapt it for dnstap logging in NSD.
1269	- dnstap.c with auth query and auth response, and called from
1270	  the collector.
1271	- dnstap work, config nsd.conf parse.
1272	- dnstap example config.
1273
127425 September 2018: Wouter
1275	- NSD 4.1.25 released, trunk has 4.1.26 in development.
1276
127718 September 2018: Wouter
1278	- tag for NSD 4.1.25rc1.
1279
128017 September 2018: Wouter
1281	- Fix #4156: Fix systemd service manager state change notification
1282
128314 September 2018: Wouter
1284	- Remove unused if clause during server service startup.
1285
128613 September 2018: Wouter
1287	- Fix typo in clang analysis test.
1288	- Annotate exit functions with noreturn.
1289	- nsd-control prints neater errors for file failures.
1290
129112 September 2018: Wouter
1292	- clang analysis test.
1293
129411 September 2018: Wouter
1295	- Fix to combine the same error function into one, from Xiaobo Liu.
1296	- Fix initialisation in remote.c.
1297	- please clang analyzer and fix parse of IPSECKEY with bad gateway.
1298	- Fix unit test code for clang analyzer.
1299	- Fix nsd-checkconf fail on bad zone name.
1300
130110 September 2018: Wouter
1302	- Fix coding style in nsd.c
1303
13047 September 2018: Wouter
1305	- append_trailing_slash has one implementation and is not repeated
1306	  differently.
1307
13084 September 2018: Wouter
1309	- Fix codingstyle in nsd-checkconf.c in patch from Sharp Liu.
1310
131115 August 2018: Wouter
1312	- Fix use_systemd typo/leftover in remote.c.
1313
131413 August 2018: Wouter
1315	- tag for 4.1.24 release.
1316	- trunk is 4.1.25 in development.
1317	- Fix that nsec3 precompile deletion happens before the RRs of
1318	  the zone are deleted.
1319	- Fix printout of accepted remote control connection for unix sockets.
1320
13216 August 2018: Wouter
1322	- tag for 4.1.24rc1 release.
1323
132430 July 2018: Wouter
1325	- Tag for NSD 4.1.23 release, trunk is 4.1.24, includes
1326	  fix NSD time sensitive TSIG compare vulnerability.
1327	- Fix checkconf test for use-systemd option.
1328
132925 July 2018: Wouter
1330	- #4133: Fix that when IXFR contains a zone with broken NSEC3PARAM
1331	  chain, NSD leniently attempts to find a working NSEC3PARAM.
1332
133323 July 2018: Wouter
1334	- Remove socket activation from systemd code, it was reported as
1335	  not useful to enable.  The readiness signalling is still there,
1336	  and can be enabled with use-systemd: yes.
1337	- Only call sd_notify from systemd when use-systemd is yes.
1338
13396 July 2018: Wouter
1340	- RFC8162 support, for record type SMIMEA.
1341	- Fix that type CAA (and URI) in the zone file can contain
1342	  dots when not in quotes.
1343
134426 June 2018: Wouter
1345	- configure --enable-systemd (needs pkg-config and libsystemd) can
1346	  be used to then use-systemd: yes in nsd.conf and use socket
1347	  activation and readiness signalling with systemd.
1348
134919 June 2018: Wouter
1350	- #4106: Fix that stats printed from nsd-control are recast from
1351	  unsigned long to unsigned (remote.c).
1352
135314 June 2018: Wouter
1354	- Fix that first control-interface determines if TLS is used.  Warn
1355	  when IP address interfaces are used without TLS.
1356
135712 June 2018: Wouter
1358	- #4102: control interface via local socket.
1359	  configure it with control-interface: "/path/nsd.ctl"  The path
1360	  has to start with a / to separate it from an IP address.
1361	  The local socket does not use SSL, but unencrypted traffic, use
1362	  file and containing directory permissions to restrict access.
1363
13646 June 2018: Wouter
1365	- Patch to fix openwrt for mac os build darwin detection in configure.
1366
13674 June 2018: Wouter
1368	- tag for 4.1.22rc1.  Became 4.1.22 on 11 June, trunk is 4.1.23 in
1369	  development from this point.
1370
137131 May 2018: Wouter
1372	- Fix to use same condition for nsec3 hash allocation and free.
1373
137423 May 2018: Wouter
1375	- Use accept4 to speed up answer of TCP queries, on Linux and FreeBSD
1376	  and OpenBSD.
1377
137822 May 2018: Wouter
1379	- Fix nsec3 hash of parent and child co-hosted nsec3 enabled zones.
1380
138115 May 2018: Wouter
1382	- Fix memory free in unit test.
1383
138414 May 2018: Wouter
1385	- Tag for 4.1.21 release.
1386	- trunk has 4.1.22 in development.
1387	- refuse-any sends truncation (+TC) in reply to ANY queries over UDP,
1388	  and allows TCP queries like normal.
1389
13907 May 2018: Wouter
1391	- Tag for 4.1.21rc1 release.
1392
13934 May 2018: Wouter
1394	- Fix #4093: Release notes not using 2018.
1395
13963 May 2018: Wouter
1397	- Fix buffer size warnings from compiler on filename lengths.
1398
139926 April 2018: Wouter
1400	- lower memory usage for tcp connections, so tcp-count can be higher.
1401	- Fix checkconf test for refuse-any option.
1402
14033 April 2018: Wouter
1404	- refuse-any nsd.conf option that refuses queries of type ANY.
1405
14065 March 2018: Wouter
1407	- Fix #3562: explain build error when flex missing.
1408
140920 February 2018: Wouter
1410	- For more clang warnings
1411	- Fix spelling error in xfr-inspect.
1412
141319 February 2018: Wouter
1414	- Fix for clang analysis complaints.
1415
141615 February 2018: Wouter
1417	- --enable-memclean cleans up memory for use with memory checkers,
1418	  eg. valgrind.
1419	- Fix unused variable warnings from clang analyzer.
1420
142114 February 2018: Wouter
1422	- updated RELNOTES for upcoming release.
1423	- tag 4.1.20rc1, became release on 20 feb, trunk has 4.1.21 in
1424	  development.
1425
14269 February 2018: Wouter
1427	- make depend: updated the make dependencies in the Makefile.
1428
14298 February 2018: Wouter
1430	- Fix memory leak when rehashing nsec3 after axfr or zonefile read,
1431	  in the selectively allocated precompiled nsec3 hashes.
1432
14336 February 2018: Wouter
1434	- Fix memory leak in zone file read of unknown rr formatted RRs.
1435
143611 December 2017: Wouter
1437	- Add test for support of -Wno-address-of-packed-member for
1438	  --enable-packed.
1439	- tag for release 4.1.19
1440	- trunk has 4.1.20 in development.
1441
14428 December 2017: Wouter
1443	- tag for 4.1.19rc1
1444
14457 December 2017: Wouter
1446	- Fixup lexer warning for gcc 4.2.
1447
14486 December 2017: Wouter
1449	- Fix 3392: Fix regression in 4.1.18 for notify lists with ip4
1450	  and ip6 targets.
1451
14525 December 2017: Wouter
1453	- Fix spelling error in xfr-inspect.
1454
14551 December 2017: Wouter
1456	- Fix warnings emitted by clang for --enable-packed.  Alignment is not
1457	  a problem for x86_64, don't enable packed when the platform
1458	  requires aligned access.
1459
146030 November 2017: Wouter
1461	- tag for 4.1.18 release.
1462	- trunk has 4.1.19 in development.
1463	- ignore fallthrough compiler warning in flex EOF rule.
1464
146527 November 2017: Wouter
1466	- Fix crash for DS query when parent and child zones both configured
1467	  in nsd.conf and parent zone has not loaded properly.
1468	- tag for 4.1.18rc2.
1469
147016 November 2017: Wouter
1471	- tag for 4.1.18rc1.
1472
147314 November 2017: Wouter
1474	- Fix #2871: Increase number of sockets for xfrd transfers.
1475
14766 November 2017: Wouter
1477	- Set usage counts in namedb tree to uint32 to save memory.
1478	- Fix up debug content from nsec3 collision printout work.
1479
14802 November 2016: Wouter
1481	- make ip-transparent option work on OpenBSD.
1482
148311 October 2016: Wouter
1484	- Fix #1567: Change crit to err log level for gettimeofday failure.
1485	  Add defines for compile without syslog.
1486
14879 October 2016: Wouter
1488	- Fix collision printout of nsec3 to print name, hash and reverse.
1489
14902 October 2016: Wouter
1491	- nsd-control zonestatus prints wait time between attempts, for zones
1492	  that are in that waiting time.
1493
149419 September 2016: Wouter
1495	- merges feature branch branches/alloced_prehashes into trunk.
1496
149718 September 2016: Wouter
1498	- Fix #1446: A corrupted zone file "propagates" to good ones.
1499
150014 September 2016: Wouter
1501	- Fix layout in xfrd.c.
1502
15036 September 2017: Willem
1504	- Save memory by selectively allocate precompiled nsec3 hashes
1505
150629 August 2016: Wouter
1507	- With --enable-packed save memory, at expense of unaligned reads.
1508	- Fix writev compile warning on FreeBSD.
1509
151025 July 2016: Wouter
1511	- NSD sends up to 16 notifies simultaneously for up to 64 zones,
1512	  to increase rate of notification for large master configurations.
1513
151424 July 2016: Wouter
1515	- Fix gcc 7.1.1 warnings.
1516
151717 July 2016: Wouter
1518	- Trunk has 4.1.18
1519	- xfr-inspect is part of source dir, but not made or installed by
1520	  default.
1521	- retry timeout between sending notifies dropped from 15 to 3 sec.
1522
152313 July 2016: Wouter
1524	- tag 4.1.17rc1, and that became the 4.1.17 release on 21 July 2017.
1525
152629 June 2016: Wouter
1527	- make depend.
1528
152926 June 2016: Wouter
1530	- Fix text format of deletes for CDS and CDNSKEY, single 0 to represent
1531	  empty base64 or hex string.
1532
153323 June 2016: Wouter
1534	- Fix potential null pointer in nsec3 adjustment tree.
1535
153615 June 2016: Wouter
1537	- xfr-inspect debug tool prints out xfr contents of files in tmp.
1538
15396 June 2016: Wouter
1540	- Fix #1272: use writev to put tcp length field with data for outgoing
1541	  zone transfer requests.
1542
154316 May 2016: Wouter
1544	- zone parser parses type AVC (it has TXT format).
1545
154625 April 2016: Wouter
1547	- 4.1.16 release tag.
1548	- trunk contains 4.1.17 in development.
1549
155011 April 2016: Wouter
1551	- 4.1.16 rc1 tag for release.
1552	- minor manpage fix.
1553
15545 April 2016: Wouter
1555	- Patch for expire state in multi-master when masters includes
1556	  broken master.
1557
155827 March 2016: Wouter
1559	- Fix 1243: Option to make NSD emit really minimal responses,
1560	  minimal-responses: yes in nsd.conf.
1561	- but they give additional information for priming queries (type NS).
1562
15636 March 2016: Wouter
1564	- Fix 1228: OpenSSL include is not guarded with HAVE_SSL
1565
156628 February 2016: Wouter
1567	- Printout serial error with hint it may be too big.
1568
156920 February 2016: Wouter
1570	- Fix missing _t to _type conversion for disable-radix-tree option.
1571
157215 February 2016: Wouter
1573	- zone parser can parse acronyms for algorithms ED25519 and ED448.
1574
157513 February 2016: Wouter
1576	- Calculate new udb index after growing the array, fix from
1577	  Chaofeng Liu.
1578
15797 February 2016: Wouter
1580	- tag for 4.1.15 rc1.  Which became 4.1.15 on 16 Feb.  Trunk 4.1.16.
1581
158219 January 2016: Wouter
1583	- Fix to rename _t typedefs because POSIX reserves them.
1584
15853 January 2016: Wouter
1586	- Fix #1195: Fix so that NSD fails on non-compliant values for Serial.
1587
158814 December 2016: Wouter
1589	- Squelch zone transfer error address family not supported by protocol
1590	  at low verbosity levels.
1591
159213 December 2016: Wouter
1593	- Fix nsd-control and ipv6 only.
1594
15958 December 2016: Wouter
1596	- tag 4.1.14
1597	- trunk contains 4.1.15 in development.
1598
15991 December 2016: Wouter
1600	- Fix restart of zone transfers when new config becomes available.
1601	- tag 4.1.14rc1
1602
160325 October 2016: Wouter
1604	- Fix #1132 for SERVFAIL zones perform backoff, and remembers the
1605	  timeout on next startup.
1606	- Save backoff timeout into xfrd.state file, this file has a higher
1607	  version number now.  Old files are skipped silently (causes
1608	  refresh) and created as new files upon exit.
1609	- Set number of rounds to 1; NSD will try every master once, then
1610	  wait for timeout or notify.
1611	- Fix axfr fallback for rounds to 1.
1612
161320 October 2016: Wouter
1614	- suppress compile warning in lex files.
1615
161618 October 2016: Wouter
1617	- Robust fix against missing master in tcp_open for xfrd.
1618	- More in depth fix for the previous.
1619	- Fix wildcards in include: config statements with chroot enabled.
1620
162127 September 2016: Wouter
1622	- NSD 4.1.13 tag.
1623	- trunk has 4.1.14 in development.
1624	- Fix null memcpy for radixtree with single link element.
1625
162619 September 2016: Wouter
1627	- Review comments Ralph: wrapped long lines and nicer example conf.
1628
162916 September 2016: Wouter
1630	- NSD 4.1.13rc1 tag.
1631
163215 September 2016: Wouter
1633	- Test for openssl init_crypto and init_ssl functions.
1634
163514 September 2016: Ralph
1636	- Fix OPENSSL_INIT_ADD_ALL_DIGESTS compatibility check
1637
163813 September 2016: Wouter
1639	- Fix double const in dname_const() function.
1640	- Silenced flex-generated sign-unsigned warning print with gcc
1641	  diagnostic pragma.
1642
16438 September 2016: Wouter
1644	- more extensible edns option handling.
1645
16462 September 2016: Wouter
1647	- Release of 4.1.12; trunk is 4.1.13 and the patch for 4.1.12 (that
1648	  does not contain the other changes to the trunk) is folded into
1649	  the trunk.
1650	- Fix #827: fix compile with openssl 1.1.0 with api=1.1.0.
1651
165225 August 2016: Wouter
1653	- Fix multimaster for not tried full zone transfer for a expired zone.
1654	- Explain --disable-radix tree uses some more CPU.
1655
165622 August 2016: Wouter
1657	- Fix README spelling error of BSD license (reported by Joerg Jung).
1658
165919 August 2016: Wouter
1660	- for type SRV add A/AAAA to the additional section (if possible),
1661	  just like we already do for type MX.
1662
166317 August 2016: Wouter
1664	- Add robustness against unallocated data in nsec3 trees.
1665
166616 August 2016: Wouter
1667	- configure --disable-radix-tree for about 15% lower memory usage.
1668
166912 August 2016: Wouter
1670	- Fix #817: xfrd update failed loop.
1671
16729 August 2016: Wouter
1673	- Can config key algorithms with the digest name, eg. 'sha256'.
1674	- default tsig algorithm is sha256.
1675	- Fix typo in log output, 'transfered' -> 'transferred'.
1676	- Fix compile warnings about signcompare in minmax retrytime.
1677
16788 August 2016: Wouter
1679	- Support syntax of RR type OPENPGPKEY from RFC 7929.
1680
16815 August 2016: Wouter
1682	- multi-master-check: yes can be used to check all masters for the
1683	  last version, using the higher version from the configured masters,
1684	  from Manabu Sonoda.
1685	- small fixups on patch.  And fix spacing and remove configure flag.
1686	- Fix #812: make depend fails after distribution.
1687
16882 August 2016: Wouter
1689	- Fix unused result warnings from write and strtol.
1690
16911 August 2016: Wouter
1692	- Tag 4.1.11rc1.
1693	- Fix nsec3 missing for nsec3 signed parent and child for DS at zonecut.
1694	- Tag 4.1.11rc2.
1695	- trunk is 4.1.12 in development.
1696
16978 July 2016: Wouter
1698	- Note down tracking numbers for issue JVN#63359718 JPCERT#91251865.
1699
17005 July 2016: Wouter
1701	- Fix #790: size-limit-xfr can stop NSD from downloading infinite zone
1702	  transfer data size, from Toshifumi Sakaguchi.
1703
170427 June 2016: Wouter
1705	- Set default for min-refresh-time and min-retry-time to 0.  Behaves
1706	  just like before, but has a configurable option in nsd.conf.
1707	- Fix #783: Trying to run a root server without having configured it
1708	  silently gives wrong answers.
1709
171016 June 2016: Wouter
1711	- When tcp is more than half full, use short timeout for tcp session.
1712	- Patch for {max,min}-{refresh,retry}-time from YAMAGUCHI Takanori.
1713	- man page entries for max-refresh-time patch.
1714
171515 June 2016: Wouter
1716	- Fix build without IPv6, patch from Zdenek Kaspar.
1717
171814 June 2016: Wouter
1719	- release 4.1.10 and tag for that.
1720	- trunk has 4.1.11 in development.
1721
17227 June 2016: Wouter
1723	- Fix NSEC3 ent fix to use closest encloser, not wildcard denial.
1724
17252 June 2016: Wouter
1726	- Fix for NSEC3 with zone signed without exact match for empty
1727	  nonterminals, the answer for that domain gets wildcard denial.
1728	- #772 Document that recvmmsg has IPv6 problems on some linux kernels.
1729	- tag for 4.1.10rc1.
1730
173131 May 2016: Wouter
1732	- print notice that nsd is starting before taking off.
1733
173420 May 2016: Wouter
1735	- Updated fix for nonterminal nsec3 answers.
1736
173719 May 2016: Wouter
1738	- Fix empty nonterminal nsec3 cover answers.
1739
174012 May 2016: Wouter
1741	- NSD includes AAAA before A for queries over IPV6 (in delegations).
1742	  And TC is set if no glue can be provided with a delegation because
1743	  of packet size.
1744
174519 April 2016: Wouter
1746	- Fix #755: NSD spins after a zone update and a lot of TCP queries.
1747
17487 April 2016: Wouter
1749	- If set without nsd.db print "" as the default in the man pages.
1750
17514 April 2016: Wouter
1752	- Fix #751: NSD fails to occlude names below a DNAME.
1753
175424 March 2016: Wouter
1755	- Fix for openssl 1.1.0, HMAC_CTX size not exported from openssl.
1756
175721 March 2016: Wouter
1758	- Update acx_nlnetlabs.m4 to version 33 with HMAC_Update test.
1759	- acx_nlnetlabs.m4 to v34, with -ldl -pthread test for libcrypto.
1760
176115 March 2016: Wouter
1762	- ip-freebind: yesno option in nsd.conf sets IP_FREEBIND socket option
1763	  for Linux, binds to interfaces and addresses that are down.
1764	- Change the nsd.db file version because of nanosecond precision fix.
1765	- 4.1.9 release with the nsd.db file version fix (but not freebind),
1766	  trunk contains 4.1.10 in development.
1767
176810 March 2016: Wouter
1769	- Tag 4.1.8
1770	- Trunk contains 4.1.9 in development.
1771
17722 March 2016: Wouter
1773	- Tag 4.1.8rc1
1774
17751 March 2016: Wouter
1776	- #744: Fix that NSD replies for configured but unloaded zone
1777	  with SERVFAIL, not REFUSED.
1778
177916 February 2016: Wouter
1780	- RR type CSYNC (RFC7477) syntax is supported.
1781
178229 January 2016: Wouter
1783	- #739: zonefile changes when mtime is small are detected on reload,
1784	  if filesystem supports precision mtime values.
1785
178619 January 2016: Wouter
1787	- Fix #736: segfault during zone transfer.
1788
178908 January 2016: Wouter
1790	- Define _DEFAULT_SOURCE with _BSD_SOURCE for recent Linuxes.
1791
179205 January 2016: Wouter
1793	- #732: tcp-mss, outgoing-tcp-mss options for nsd.conf, patch
1794	  from Daisuke Higashi.
1795
179604 January 2016: Wouter
1797	- Updated acx_nlnetlabs to version 32.
1798
179911 December 2015: Wouter
1800	- Fix flto check for OSX clang.
1801
180210 December 2015: Wouter
1803	- 4.1.7 release
1804	- trunk has 4.1.8 in development.
1805	- take advantage of arc4random_uniform if available, patch from
1806	  Loganaden Velvindron.
1807
18083 December 2015: Wouter
1809	- tag for 4.1.7rc1 prerelease.
1810
18112 December 2015: Wouter
1812	- configure --enable-ratelimit-default-is-off with --enable-ratelimit
1813	  to set the default ratelimit to disabled but available in nsd.conf.
1814	- Document that ratelimit qps and slip are updated in reconfig.
1815	- version: "string" option to set chaos version query reply string.
1816	- Fix up defaults in manpage.
1817
18181 December 2015: Wouter
1819	- Explain rrl-slip better in documentation.
1820
182130 November 2015: Wouter
1822	- Fix TCP responses when REUSEPORT is in use by turning it off.
1823	- reuseport: no is the default, because the feature is not troublefree.
1824	- Document default in manpage for rrl-slip, ip4 and 6 prefixlength.
1825
182624 November 2015: Wouter
1827	- Fix zonec ttl mismatch printout to include more information.
1828
182918 November 2015: Wouter
1830	- RELNOTES more descriptive.
1831	- newer acx_nlnetlabs.m4.
1832	- spelling fixes from Igor Sobrado Delgado.
1833
183417 November 2015: Wouter
1835	- Fix #721: Fix wrong error code (FORMERR) returned for unknown
1836	  opcode.  NOTIMP expected.
1837
183816 November 2015: Wouter
1839	- Allocate less memory for TSIG digest.
1840
18416 November 2015: Wouter
1842	- Fixup for newer acx_nlnetlabs.m4, test for openssl version after
1843	  testing for libdl need.
1844
18455 November 2015: Wouter
1846	- newer acx_nlnetlabs.m4, does not needlessly link with -ldl.
1847
184830 October 2015: Wouter
1849	- Fix tpkg tests for portability.
1850
185129 October 2015: Wouter
1852	- patch from Doug Hogan for SSL_OP_NO_SSLvx options.
1853	- updated contrib/nsd.spec, from Bálint Szigeti.
1854	- support configure --with-dbfile="" for nodb mode by default, where
1855	  there is no binary database, but nsd reads and writes zonefiles.
1856
185727 October 2015: Wouter
1858	- portability fixes.
1859
186026 October 2015: Wouter
1861	- Init pfd for handlers added during handler-event-walk.
1862
186323 October 2015: Wouter
1864	- Fix many interfaces and zones updates from nsd parent event loop.
1865
186622 October 2015: Wouter
1867	- 4.1.6 release tag.
1868	- trunk contain 4.1.7 in development.
1869
187020 October 2015: Wouter
1871	- 4.1.6rc2 tag created.
1872
187319 October 2015: Wouter
1874	- Fix compile of zonec error message on FreeBSD.
1875
187615 October 2015: Wouter
1877	- 4.1.6rc1 tag created.
1878
187913 October 2015: Wouter
1880	- nsd-checkconf warns for master zones with no zonefile statement.
1881	- Fix start failure when many file descriptors are in use.
1882	- The servfail rcode is not printed with a space in the middle.
1883	- fixup file descriptor fixup nicer.
1884	- print failed token for config syntax error or parse error.
1885
188612 October 2015: Wouter
1887	- Fix #711: Document that debug-mode yes is used for staying
1888	  attached to the supervisor console.
1889	- Document verbosity 3 prints more information.
1890
189130 September 2015: Wouter
1892	- makedist.sh print on pgp signature creation.
1893
189428 September 2015: Wouter
1895	- Fix typo in zonec.c inside error message.
1896
189724 September 2015: Wouter
1898	- Fix #701: Fix that AD=1 set in a BADVERS response.
1899
190021 September 2015: Wouter
1901	- Fix #706: default port 53 not opened on ip4 because of getaddrinfo
1902	  hints initialisation failure.
1903	- 4.1.5 release tag
1904	- trunk contains 4.1.6 in development.
1905
19069 September 2015: Wouter
1907	- 4.1.4 release tag created.
1908	- trunk contains 4.1.5 in development.
1909
191031 August 2015: Wouter
1911	- 4.1.4rc1 tag created.
1912
191328 August 2015: Wouter
1914	- Fix #698 formatting errors and typos in nsd.8.in.
1915	- Add --enable-pie and --enable-relro-now options.
1916
191718 August 2015: Wouter
1918	- Admitted axfrs are logged at verbosity 1.  Refused at verbosity 2.
1919
192017 August 2015: Wouter
1921	- Fixed checkconf test for reuseport setting.
1922
192314 August 2015: Wouter
1924	- SO_REUSEPORT does not work on FreeBSD.  Enabled by default on Linux,
1925	  not enabled by default on other OSes.
1926
19275 August 2015: Wouter
1928	- Fix that notify from nsd-control contains soa serial.
1929
19303 August 2015: Wouter
1931	- squelch SO_REUSEPORT failure on verbosity less than 3.
1932
193331 July 2015: Wouter
1934	- removed hardcoded interface limit, --with-max-ips removed.
1935	- SO_REUSEPORT support.
1936
193716 July 2015: Wouter
1938	- Fix #618: documented need to list ip-addresses separately in
1939	  nsd.conf if there are multiple, because the source address of
1940	  replies can otherwise go wrong.
1941
194210 July 2015: Wouter
1943	- Fix that for expired zones NSD performs an AXFR and accepts newer
1944	  and older serial numbers.
1945	- Document that minimal responses only minimizes responses to fit
1946	  in one datagram.  It does not minimize smaller responses.
1947
19482 July 2015: Wouter
1949	- Fix NSID response for short edns sizes.
1950
195123 June 2015: Wouter
1952	- Trunk contains 4.1.4 in development.
1953
19544 June 2015: Wouter
1955	- Tag 4.1.3rc1
1956	- improve nsd-control usage text. (23 june - added to 4.1.3)
1957	- RFC7553 RR Type URI support.
1958
19592 June 2015: Wouter
1960	- Fix redefined macro lex warning for freebsd flex.
1961
196229 May 2015: Wouter
1963	- Fix that formerrors are ratelimited.
1964
196519 May 2015: Wouter
1966	- max-interfaces raised to 32.
1967
196818 May 2015: Wouter
1969	- removed unused defines for unofficial tsig-hmac algorithm codes.
1970	  The TSIG algorithm is identified by name in the config file.
1971
197214 May 2015: Wouter
1973	- hmac sha224, sha384 and sha512 support, patch from David Gwynne.
1974
197523 April 2015: Wouter
1976	- Fix crash in zone parser for relative dname after error in origin.
1977	- Test for zone parser failures
1978
197921 April 2015: Wouter
1980	- nsd-control addzones and delzones read list of zones from stdin.
1981	- Fix task and zonestat files to be stored in a subdirectory in tmp
1982	  to stop privilege elevation.
1983	- printout names for successful addition and removal with bulk command.
1984
198520 April 2015: Wouter
1986	- Fix #665: when removing subdomain, nsd does not reparse parent zone.
1987
198814 April 2015: Wouter
1989	- trunk contains 4.1.3(upcoming).
1990
19917 April 2015: Wouter
1992	- Tag 4.1.2rc2.
1993
19942 April 2015: Wouter
1995	- Made log message more consistent, changed 'axfr refused' log message
1996	  to be more consistent with other messages.  Also notify refused.
1997	- verbosity 2 logs axfr refused and notify refused.
1998	  verbosity 1 contains less log messages.
1999
200031 March 2015: Wouter
2001	- Tag 4.1.2rc1.
2002
200324 March 2015: Wouter
2004	- Fix #654: Fix contradiction in notify logging verbosity level.
2005	- Incoming notifies have serial number logged (at verbosity 1).
2006	- Fix #655: Fix contradiction in verbosity for zone transfers.
2007
200817 March 2015: Wouter
2009	- Use reallocarray for integer overflow protection, patch submitted
2010	  by Loganaden Velvindron.
2011	- Fix allocation integer overflow checks.
2012
201313 March 2015: Wouter
2014	- Fix buffer overflow in config parse of domain name,
2015	  reported by John Van de Meulebrouck Brendgard.
2016
201712 March 2015: Wouter
2018	- Updated default keylength in nsd-control-setup to 3k.
2019
202010 March 2015: Wouter
2021	- Fix use after free after zonefile syntax error followed by ttl
2022	  or origin directive, reported by John Van de Meulebrouck Brendgard.
2023	- Fix syntax error followed by too many TXT elements parse crash
2024	  reported by John Van de Meulebrouck Brendgard.
2025
20269 March 2015: Wouter
2027	- Fix origin directive from unused old value and subdomain parser
2028	  failure, reported by John Van de Meulebrouck Brendgard.
2029
20302 March 2015: Wouter
2031	- Fix b64pton out of bounds error on invalid zonefile input
2032	  reported by John Van de Meulebrouck Brendgard.
2033
203420 February 2015: Wouter
2035	- Fix segfault on double origin in zone reader (thanks John Van de
2036	  Meulebrouck Brendgard).
2037
203819 February 2015: Wouter
2039	- Remove dead code domain_table_iterate.
2040	- Fix segfault in zone reader on invalid input
2041	  reported by John Van de Meulebrouck Brendgard.
2042
20435 February 2015: Wouter
2044	- Fix #642: Change 'zone read with no errors' to '.. with success'.
2045	  Patch from Benedikt Heine.
2046
20473 February 2015: Wouter
2048	- Tag 4.1.1 release
2049	- Trunk is 4.1.2 in development.
2050	- Remove some duplicate header includes (from Brad Smith).
2051	- Fix tcp waiting list for zone transfers where the bind and connect
2052	  calls fail.
2053
205429 January 2015: Wouter
2055	- Fix zonesdir chroot error message.
2056
205728 January 2015: Wouter
2058	- correct some hyphen-used-as-minus-sign (from Andreas Schulze) in
2059	  man pages.
2060
206127 January 2015: Wouter
2062	- Tag 4.1.1rc1
2063
206421 January 2015: Wouter
2065	- Synthesize CNAMEs with same TTL as DNAME.
2066
206712 January 2015: Wouter
2068	- Fix casts for ctype functions (from Todd Miller).
2069	- nsd-checkconf -f prints out full name of pidfile (with dir).
2070
20719 January 2015: Wouter
2072	- Fix bug#637: fix that nsd.db grows limitlessly, an off by one
2073	  on one megabyte free chunks, created during AXFRs of large zones,
2074	  that caused the one megabyte chunk to be leaked.
2075	- Fix udb-inspect for one megabyte chunks, counts and statistics.
2076
20776 January 2015: Wouter
2078	- Fix spinning NSD with lots of failing transfers, due to pointer
2079	  comparison using void pointer subtraction (from Otto Moerbeek).
2080
20815 January 2015: Wouter
2082	- Patch nsd_munin_ from Philip Paeps to use type ABSOLUTE.
2083
20844 Nov 2014: Wouter
2085	- Document zonestat config, and nsd-checkconf access.
2086
20873 Nov 2014: Wouter
2088	- Fix that failure to add tcp to tcp base does not leak the socket.
2089
209027 Oct 2014: Wouter
2091	- Disabled use of SSLv3 in nsd-control.
2092	- zonestats are cleared (or not, with stats_noreset).
2093
209422 Oct 2014: Wouter
2095	- Test for wildcard fix (from 3.2).
2096
209716 Oct 2014: Wouter
2098	- Fixes for wildcard addition and deletion, speedup for some cases.
2099
210015 Oct 2014: Wouter
2101	- Fix that queries for noname CH TXT are REFUSED instead of nodata.
2102
210314 Oct 2014: Wouter
2104	- per zone statistics with --enable-zone-stats, configure with
2105	  zonestats: "zonestatidentifier", zones with the same id are added.
2106
210710 Oct 2014: Wouter
2108	- Fix #616: retry xfer for zones with no content after command.
2109	- Fix char used as array index warnings on NetBSD.
2110
21118 Oct 2014: Wouter
2112	- Fix "xfrd_handle_ipc: bad mode" log errors when compiled
2113	  with --disable-bind8-stats.
2114
211518 Sep 2014: Wouter
2116	- Fix that expired zones stay expired after a server restart.
2117
211815 Sep 2014: Wouter
2119	- RFC 7344: CDS and CDNSKEY (read in).
2120
21214 Sep 2014: Wouter
2122	- Tag 4.1.0.
2123	- trunk is 4.1.1 in development.
2124	- fix manpage for nsd-checkzone to have version and date.
2125
212629 Aug 2014: Wouter
2127	- Fix install of the nsd-checkconf man page.
2128
212928 Aug 2014: Wouter
2130	- Tag 4.1.0rc1
2131
213225 Aug 2014: Wouter
2133	- Increased default --with-max-ips from 8 to 16, this increases the
2134	  number of interfaces you can specify in nsd.conf to listen to.
2135
213619 Aug 2014: Wouter
2137	- Remove .LP after .SH in man pages.
2138
21397 Aug 2014: Wouter
2140	- Fix for process swap of main and reload, reload failure from the
2141	  pipe is acted on, and reload fail not cause nsd to shutdown, also
2142	  ignore sigchlds from the servermain in reload, that would cause
2143	  EINTR to break file reads.
2144	- trunk has version 4.1.
2145
21465 Aug 2014: Wouter
2147	- Fix #600: document that provide-xfr provides AXFR and not IXFR.
2148	- remove program group fix, because it is not needed.
2149	- Fix rising-load-average or memory-leaks in OSes (Linux since 2.6),
2150	  that keep track of all past process parents, or leak memory
2151	  for them.  Fix makes it so there is no very deep string of
2152	  process parents.
2153	  The reload process is now the process parent of servermain.  That
2154	  makes signals for children arrive at the reload, and servermain
2155	  has to use closed pipes to detect that children have exited.
2156
21571 Aug 2014: Wouter
2158	- Set program group on main process and its child processes, and
2159	  kill them on a reload.
2160
216120 July 2014: Wouter
2162	- Fix endian.h include for OpenBSD.
2163
216415 July 2014: Wouter
2165	- Fix -O3 compile flag to -O2 to avoid miscompilations.
2166	- Allow user to override the -g -O2 CFLAGS in ./configure.
2167
216811 July 2014: Wouter
2169	- fix strptime implicit declaration error on OpenBSD.
2170
21719 July 2014: Wouter
2172	- removed unnecessary arc4random_uniform.
2173
21748 July 2014: Matthijs
2175	- fake-rfc2553 patch (thanks Benjamin Baier).
2176
21778 July 2014: Wouter
2178	- wait and reap processes that are not part of the process group.
2179
21807 July 2014: Wouter
2181	- Code review fixup from NSD3.
2182
218330 Jun 2014: Wouter
2184	- Fix #590: rrl log does not print wildcard as a star but escaped.
2185	- Fix #591: rrl log messages at verbosity level 1.
2186	  (If that does not work for everyone, we need rrl-log: yesno option).
2187
218827 Jun 2014: Wouter
2189	- Fixup rr-test test so that it does not fail on the #553 string.
2190
219117 Jun 2014: Matthijs
2192	- Fix #587: Default value for statistics is 0.
2193	- Remove the shift-reduce conflicts from the bug#553 fix.
2194
21955 Jun 2014: Wouter
2196	- Fix roundrobin cornercase for truncated packets.
2197	- round-robin: yesno in nsd.conf enabled round robin rotation.
2198
219928 May 2014: Wouter
2200	- Fix #585: yylex_destroy missing, cannot compile on RHEL 5.x.
2201	- Fix #583: Round-robin for records in the Answer section.
2202
220322 May 2014: Wouter
2204	- Fix zonefile parse with no whitespace before semicolon comments.
2205
220616 May 2014: Wouter
2207	- xfrd reaps children on a timer as well, similar to server_parent.
2208
22098 May 2014: Wouter
2210	- Fix #564: nsd-checkzone tool to check zonefile correctness.
2211
22127 May 2014: Wouter
2213	- Fix #577: makefile incorrectly installed manpages from srcdir.
2214
221530 April 2014: Wouter
2216	- Fix that xfrd reaps all children on every eventloop, because some
2217	  exited reloads may attach here and need reaping, also if the signal
2218	  is lost.
2219
222023 April 2014: Wouter
2221	- Fix progress printout for very large zones (numeric overflow).
2222
222310 April 2014: Wouter
2224	- Fix write_socket return value check in server.c (Thanks Brad Smith,
2225	  Mark Kettenis).
2226
22278 April 2014: Wouter
2228	- nsd-control addzone reports if zone already exists.
2229
22307 April 2014: Wouter
2231	- Fix #571: unused variable and incompatible pointer warnings when
2232	  compiled on a system without INET6.
2233
223427 March 2014: Wouter
2235	- Fix delete or rename of a lot of zones and make it take a
2236	  non-enormous time.  Database compaction is deferred.
2237	- Speed up deletion of zone contents a lot, (56s to 1s), speeds up
2238	  delete, rename and AXFR for zones.  Defer emptynonterminal checks.
2239	- Better example config in nsd.conf manual page.
2240	- log-time-ascii option, default yes, with readable timestamp in log.
2241
224225 March 2014: Wouter
2243	- nsd shuts down during init process if given signal.
2244	- shorter logging for zone transfer fail rcodes.
2245
224624 March 2014: Wouter
2247	- include: "foo/nsd.d/*.conf" works, wildcard glob on includes.
2248	- Fix print filename of encompassing config file on read failure.
2249
225021 March 2014: Wouter
2251	- Fix bug in nodatabase mode with ixfrs that change nsec3param
2252	  (Thanks Anand Buddhdev).
2253	- Changed maxbackoff for no-content secondary zones from 4h to 24h.
2254	- nocontent zones are checked on startup, but continue backoff
2255	  from stored xfrd.state values.
2256
225719 March 2014: Wouter
2258	- made database: "" set the 3600 default for zonefileswrite only
2259	  if it is also at its default, so that user settings override.
2260	- Unit test for zonefiles-write.
2261	- Write xfrd.state for nodb mode again.  Disable xfrd.state with
2262	  xfrdfile: "" in config.  Does not check slave zone if state is
2263	  same as last time on startup.
2264	- Fixed shutdown message sporadically not printed on exit.
2265	- Documented zonefile %s syntax in nsd.conf man page.
2266	- Fix manpage to put colon after zonefiles check and write.
2267	- Change from 'Zone" to "zone" with ".. serial .. is updated" log
2268	  message.
2269
227018 March 2014: Wouter
2271	- unit test for nodb mode.
2272	- Speed up zone write (.nl zonefile 30% faster).
2273	  The memory alloc-dealloc in print_rr has been moved to print_rrs.
2274	- (from 3.2), fix for #553 and for other TXT string syntax.
2275	- in nodb mode, xfrd.state is not written out, because the zones
2276	  are refreshed upon next startup anyway, so keeping timers and state
2277	  is unnecessary.
2278	- zonefiles-write option in nsd.conf, enabled when database is "".
2279	  The server writes changed zonefiles to disk every hour.
2280
228117 March 2014: Wouter
2282	- Speed up zone parsing (.nl reads 40% faster).
2283	  The rrtype_from_string routine is called often, optimised it.
2284
228514 March 2014: Wouter
2286	- tag 4.0.3
2287	- trunk has 4.0.4 in development.
2288	- database: "" starts without mmap of database.  Less memory is used,
2289	  zones are read from text zonefile.
2290
229113 March 2014: Wouter
2292	- Fix nsd.db unclean close check.  Previous databases are considered
2293	  unclean by the code and are created anew.
2294	- Adds nsd.db larger than 400Tb check for sanity. Also test if
2295	  filesize as documented in the file is correct.
2296	- nsd waits for tasks to complete on stop, prevents nsd.db corruption.
2297	- fix to not delete tmpdir too early in shutdown process.
2298
229912 March 2014: Wouter
2300	- tag 4.0.2
2301	- trunk has 4.0.3 in development.
2302	- disabled udb checking functionality that made it very slow,
2303	  this was enabled when enable-checking was turned on.
2304
230527 February 2014: Wouter
2306	- tag 4.0.2rc1
2307
230826 February 2014: Wouter
2309	- Fix that NSD will delete and recreate not-clean-closed databases.
2310
231120 February 2014: Wouter
2312	- Fix from 3.2: make SOA RDATA comparisons in XFR more lenient (only
2313	check serial).
2314
231518 February 2014: Wouter
2316	- Fix leak of zone name after zonefile read.
2317	- Fix malloc too large that would be leaked in the radix tree.
2318
231914 February 2014: Wouter
2320	- configure change for easier compile on Minix.
2321
232210 February 2014: Wouter
2323	- Fix #552: zonefile loads on nsd-control reconfig when the name
2324	  of the file has changed.
2325
23267 February 2014: Wouter
2327	- Fix #551: change Regent to Copyright holder in the LICENSE,
2328	  to match the definition on opensource.org for the BSD License.
2329
23303 February 2014: Wouter
2331	- Disabled recvmmsg and sendmmsg usage by default because kernel
2332	  versions have implementation issues: ipv6 ignored, security issues.
2333	- Detect libevent2 install automatically by configure, and use
2334	  event2 header files if necessary.
2335	- Fixup link with lib/event2 subdir.
2336
233730 January 2014: Wouter
2338	- Fix expired zones to give SERVFAIL, also when parent zone loaded.
2339
234027 January 2014: Wouter
2341	- tag 4.0.1.
2342	- trunk is 4.0.2 in development.
2343	- rcode REFUSED for queries to non-hosted zones.
2344	- documented nsd-control zonestatus output in nsd-control manpage.
2345	- remove mention of nsdc from nsd-checkconf manpage.
2346
234721 January 2014: Wouter
2348	- tag 4.0.1rc2
2349
235020 January 2014: Wouter
2351	- Fix #546:  output format errors in nsd_munin_ (Thanks Tom Hendrikx).
2352
235317 January 2014: Wouter
2354	- Fix type CAA.
2355	- Fix type EUI48.
2356	- nsid can be set with "ascii_somestring" in ascii.
2357	- Fix printout of high-chars in TXT on NetBSD.
2358
235916 January 2014: Wouter
2360	- Unit test for WKS failure.
2361
236215 January 2014: Wouter
2363	- tag 4.0.1rc1
2364
236513 January 2014: Wouter
2366	- Check if configure in srcdir collides with outofdir build.
2367
236810 January 2014: Wouter
2369	- Fix that chroot is removed from zonefile names (for absolute names).
2370
23719 January 2014: Wouter
2372	- Fix that bad IXFR updates do not result in double SOA records,
2373	  and that an AXFR is started (attempted) when the zone state seems
2374	  to be inconsistent with the master's zone state.
2375
23768 January 2014: Matthijs
2377	- Bugfix #542: Match RRSIG TTL with SOA TTL in negative response.
2378
23797 January 2014: Wouter
2380	- Fix xfrd when zone transfer TCP contains zero length packets.
2381	- Fix for NSEC3 zones where parent zone is co-hosted, also NSEC3,
2382	  because AXFRs overwrote nsec3 administration in the child zone.
2383
23842 January 2014: Wouter
2385	- Log ip address for sendto and sendmmsg failures.
2386
23874 December 2013: Matthijs
2388	- Support for CAA RRtype (RFC 6844).
2389
239026 November 2013: Wouter
2391	- Fix segfaults after read of zones with rr type WKS from zonefile.
2392	- Seed PRNG for openssl at start of daemon, fixes SSL connection issue.
2393
239425 November 2013: Wouter
2395	- (same as in 3.2.16): fix wildcard cname to nxdomain repeated rrset.
2396
239711 November 2013: Wouter
2398	- Fix bug#534: IXFR query loop over UDP for zones that are unchanged.
2399
240011 November 2013: Matthijs
2401	- EUI48 and EUI64 is now RFC 7043
2402
24035 November 2013: Wouter
2404	- Accept interface: as an alternative for ip-address: for
2405	  consistency with unbound.conf syntax.
2406
240729 October 2013: Wouter
2408	- tag for 4.0.0 release.
2409	- trunk has 4.0.1 in development, for bug fixes.
2410
241124 October 2013: Wouter
2412	- Fixup zone change code.
2413	- tag 4.0.0rc3.
2414
241521 October 2013: Matthijs
2416	- Initialize xfrd zone when changing zone from master to slave
2417	  and delete xfrd zone when changing zone from slave to master.
2418
241914 October 2013: Wouter
2420	- tag 4.0.0rc2.
2421
242214 October 2013: Matthijs
2423	- Additional log messages with reason why RR to be deleted cannot be
2424	  found.
2425
242614 October 2013: Wouter
2427	- Fix for zone transfer that has different-cased RRSIG signer names
2428	  or NSEC next-owner names.
2429
24309 October 2013: Wouter
2431	- tsig errors on incoming tsig print key name and source IP of query.
2432
24338 October 2013: Wouter
2434	- Update documentation for nsd -d option.
2435
24367 October 2013: Wouter
2437	- Fix mini_event ev_once flag to be prettier (review comments Yuri).
2438	- tag 4.0.0rc1 recreated.
2439
24404 October 2013: Wouter
2441	- Fix bug where if you do not have flex, and then install flex, it
2442	  would not make without a re-untar of the source.
2443
24443 October 2013: Wouter
2445	- Review changes from Matthijs.
2446	- doc/README updated, 'nsdc' is now removed.
2447
24481 October 2013: Wouter
2449	- Review commits from Matthijs.
2450	- doc/UPGRADING updated, review Yuri.
2451
245230 September 2013: Wouter
2453	- tag 4.0.0rc1
2454	- updated doc/RELNOTES
2455
245619 September 2013: Wouter
2457	- configure --disable-recvmmsg for compat with older Linux kernels,
2458	  by default it autodetects support in the kernel on the buildmachine.
2459
246020 Aug 2013: Wouter
2461	- Fix time at 2038, uint32s changed to time_t, support 64bit time_t.
2462
246319 Aug 2013: Wouter
2464	- Fix use of 32bit time, for 2038, thanks to Theo de Raadt for patch.
2465
246613 Aug 2013: Wouter
2467	- Bugfix#518 Incorrect RRL prefix length option names in nsd.conf
2468	  man page from Ville Mattila.
2469
24709 Aug 2013: Wouter
2471	- Fix that xfrd, and nsd-control, does not stop responding when reload
2472	  errors out.  The pid is sent like it should by server_main.
2473	- Fix that EOF in quoted string error does not cause reload to exit.
2474	- Fixup errors from the stack code checker.
2475
24766 Aug 2013: Wouter
2477	- Removed use of random when arc4random is available.  Thus, random
2478	  and srandom are then not linked with the executable.
2479
248016 Jul 2013: Wouter
2481	- Fix segfault with no logfile and chroot (Thanks Patrik Lundin).
2482
248315 Jul 2013: Wouter
2484	- beta 5 tag.
2485	- trunk has beta6 named in configure.
2486
24879 Jul 2013: Wouter
2488	- unlink xfr file if transfer is stopped, timeouted or interrupted.
2489	  And unlink xfr file in progress when the zone is deleted.
2490
24918 Jul 2013: Wouter
2492	- Increase tcpbacklog default to 256 (silently capped to 128 on BSD).
2493	  For remote control keep it at 16, it has less TCP load.
2494	  It does not actually increase TCP performance (some except), but
2495	  reduces connection loss when there is a spike in TCP connections.
2496
24975 Jul 2013: Wouter
2498	- nsd-mem stores temp files in current dir because /tmp is too small.
2499	- printout pct parsed, read, nsec3 and written every 100.000 elements
2500	  and after 5 seconds.  For big zones.
2501
25023 Jul 2013: Wouter
2503	- region-allocator has list of large allocations, so delete is in O(1).
2504	- recursive readroutine for speedup of nsd.db reads (30%).
2505	- udb-inspect prints type summary of nodes in nsd.db.
2506
250728 Jun 2013: Matthijs
2508	- Update tmp serial in xfr checking.
2509
251028 Jun 2013: Wouter
2511	- nsd.db 12% smaller, no nsec3 hash storage.  Also ups udb version
2512	  because of the format change.  printout udb write complete for
2513	  debug.
2514	- Fix warning in labellength 0 code.
2515
251627 Jun 2013: Matthijs
2517	- Better XFR checking, fallback to AXFR (if allowed) if three
2518	  malformed XFR packets have been seen.
2519	- zonec: Don't crash on domain names with label length 0.
2520
252125 Jun 2013: Matthijs
2522	- Rename --enable-eui-rrtypes to --enable-draft-rrtypes.
2523
252425 Jun 2013: Wouter
2525	- acx_nlnetlabs.m4 update, --disable-flto.
2526
252720 Jun 2013: Matthijs
2528	- Use IPV6 minimum MTU settings with TCP to reduce failures that
2529	  are caused by delays in learning working PMTU when communicating
2530	  through a tunnel.
2531	- Improved RRL logging: also print triggering query src addr and qtype
2532	  (thanks Klaus Darilion).
2533	- Merge some minor stuff from NSD3.2
2534
253518 Jun 2013: Matthijs
2536	- Add rrl-slip config option (thanks Stephane Bortzmeyer).
2537	- Add rrl-ipv{4,6}-prefix-length config option.
2538	- Bug #496: Support for EUI48 and EUI64 RR types.
2539
254014 Jun 2013: Wouter
2541	- Optimizations: -O3 if possible (user can override CFLAGS), udp
2542	  buffers are set to 1m by default (if socket options exist),
2543	  use recvmmsg and sendmmsg, or only recvmmsg, or recvfrom.
2544
254511 Jun 2013: Wouter
2546	- Fix memory leak in zone parser for txt record (since the large
2547	  number of txt subsections fix).
2548	- Fix zone parser allocations to be in db region.
2549	- nsd-mem prints advice
2550
25515 Jun 2013: Wouter
2552	- Fix segfault on repeated reconfigs, double free of zone apex name.
2553
25544 Jun 2013: Wouter
2555	- Remove duplicate zlfile variable from options structure.
2556
255730 May 2013: Wouter
2558	- Fix nsd-mem for printout of values above 4G.
2559
256016 May 2013: Wouter
2561	- Patch from Lukas Wunner that makes chroot more consistent.
2562	  Make all paths absolute with the chrootdir in front, or use
2563	  an absolute zonesdir with other patsh relative to that.
2564
25653 May 2013: Wouter
2566	- Fix race on exit of nsd, for restarts, so that the pidfile-pid
2567	  process waits until port53 has been closed before exiting.
2568	- update acx_nlnetlabs.m4 to v23, sleep w32 fix.
2569
257029 April 2013: Wouter
2571	- Remove unused pointer and fixup chroot include for trail slash.
2572
257326 April 2013: Wouter
2574	- Patch from Lukas Wunner that makes nsd.conf include files work
2575	  inside chroot/etc environments on repattern and reconfig.
2576
257725 April 2013: Matthijs
2578	- New config option "ip-transparent:", to bind to non local addresses
2579	  (thanks Arjen Zonneveld).
2580	- RRtypes ASFDB, RP, RT should not compress dnames (thanks Peter
2581	  van Dijk).
2582
258319 April 2013: Wouter
2584	- own snprintf, fix use of snprintf return value (in debug print).
2585
258618 April 2013: Wouter
2587	- fix bug #491: pick program name (0th argument) as syslog identity.
2588
25899 April 2013: Wouter
2590	- Bug #494: Exit with return code 1 if socket code fails. (from 3.2)
2591	- Fix B64_NTOP replacement definitions in configure.ac.
2592
259326 March 2013: Wouter
2594	- update lookup3.c with better endianness detection.
2595
259625 March 2013: Wouter
2597	- faster nsec3 updates.
2598	- Fixup contrib/bug390.patch for 4.0.0b4.
2599	- remove leak of nsec3.
2600	- allocate radixtree in region for small (5%) total savings and
2601	  about 15% savings in the radixtree itself (due to many small alloc
2602	  savings in region).
2603
260422 March 2013: Wouter
2605	- use less memory for non-nsec3, nsec3tree.
2606
260718 March 2013: Wouter
2608	- update nsd-mem with pretty printout and RRL count.
2609
261014 March 2013: Wouter
2611	- Fix memory statistics in nsd_munin_.
2612
26138 March 2013: Wouter
2614	- nsd-mem tool initial commit.
2615
26167 March 2013: Wouter
2617	- notify information is logged at correct verbosity level, 1.
2618
26195 March 2013: Matthijs
2620	- Add hash to rrl bucket
2621
26225 March 2013: Wouter
2623	- Fixup the growth and shrinkage of nsd.db.  This should use less
2624	  calls to remap and change the file and mmap size.
2625
262615 February 2013: Wouter
2627	- Fix compile on bigendian netbsd alpha.
2628	- Fixup tests for older dig (check if +noedns option is supported)
2629
263011 February 2013: Matthijs
2631	- Fix outgoing-interface: Don't fail if family is IPv6 but
2632	  only IPv4 outgoing-interface is set, or vice versa.
2633
263411 February 2013: Wouter
2635	- fix tcp zonetransfer pipeline lookup function.
2636	- remove compiler warning for memset from tsig read.
2637
26387 February 2013: Wouter
2639	- detect endianness in lookup3 on BSD, patch from Brad Smith.
2640	- nsd-control verbosity prints out verbosity level without argument.
2641	- nsd-control status prints out ratelimit if ratelimit is enabled.
2642
26435 February 2013: Wouter
2644	- Fix that old zonefile does not override newer AXFR for slave zones.
2645	- Nicer printout of notify.
2646	- beta4
2647
26484 February 2013: Wouter
2649	- Fix AXFR of NSEC3 slave zone.
2650
26511 February 2013: Wouter
2652	- Less printout of 'bad transfer'.
2653
265431 January 2013: Wouter
2655	- Fix that nsec3 zones are precompiled when read from udb.  This
2656	  caused assertion failures.
2657	- Fix is_apex flag for zones read from udb.
2658
265929 January 2013: Matthijs
2660	- RRL documented in nsd.conf.sample
2661
266229 January 2013: Wouter
2663	- printout log less verbosely, not every axfr packet.
2664	- remove printout of "bad transfer" to the log for notimpl.
2665	- fixup tests for new netstat and new netcat.
2666
266725 January 2013: Wouter
2668	- fix gcc warning, do not use uninit value for rng init.
2669	- fix zonefiles-check: entry in nsd.conf
2670	- remove -fwhole-program gcc flag usage.  We cannot reliably detect
2671	  if it works without failure.
2672
267323 January 2013: Wouter
2674	- beta3
2675
267622 January 2013: Wouter
2677	- Fix time calculation of zone transfer.
2678	- log ip address with tcp failure.
2679
268021 January 2013: Wouter
2681	- Improve tabs in sample nsd.conf for different tabsizes.
2682	- Fix segv if xfrdir does not exit.
2683	- create xfrdir on make install (does not remove on make uninstall,
2684	  because this could be /tmp).
2685	- do not leave task files in /tmp if nsd fails to startup because
2686	  of file permissions.
2687	- do-ip4 and do-ip6 nsd.conf options just like unbound.
2688	- fixed testset for dig9 default with edns.
2689
269018 January 2013: Wouter
2691	- Fix configure for gentoo gcc and headers.
2692	- List libevent in README.
2693	- Tabs and spaces nicer in nsd.conf.sample.
2694	- Fix spurious assertion failure for some rrl blocks.
2695
269616 January 2013: Wouter
2697	- Added zonefiles-check option, default yes, check mtimes of zone files
2698	  on sighup and startup (from Robin Hack).
2699
270015 January 2013: Wouter
2701	- documented that the _implicit_ pattern names are used internally.
2702
270310 January 2013: Wouter
2704	- updated RELNOTES.
2705	- applied patch from Robin Hack to remove double pid file truncation.
2706	- repattern is called reconfig (because most config options are
2707	  picked up, except for superuser options (chroot, logfile, port)).
2708	- document that the zonefile attribute can be empty.
2709
27109 January 2013: Wouter
2711	- 4.0.0b2 is beta2 version tag.
2712
27138 January 2013: Matthijs
2714	- Merge changes from 3.2.15 with trunk:
2715		* Update docs: CREDITS, NEW-CFG-OPTION, REQUIREMENTS,
2716		  RELNOTES, TODO
2717		* Update dname_test.tpkg test.
2718		* TSIG init only fails if no digests at all can be found.
2719		* Remove unused tsig_get_algorithm_by_id code (was used by
2720		  nsd-xfer).
2721		* Fix some fd leaks.
2722		* Bug #485: Fallback to DEFAULT_TTL if MSB is set.
2723		* Fix RCODE when xNAME loop final answer not exist to NXDOMAIN.
2724
27258 January 2013: Wouter
2726	- Fix make outside of source directory.
2727
27287 January 2013: Wouter
2729	- fixed uninit variable for empty zone axfr request
2730	- fixed alloc of acl options for config zones so they can be deleted.
2731	- fixed that pattern name is copied, so that patterns stay the same.
2732	- repattern also rereads the zones in the config file and applies that
2733	  to the running server.
2734
273521 December 2012: Wouter
2736	- --with-logfile sets the logfile inside the example documentation.
2737	- Fixed addzone and delzone inside chroot (thanks Will Pressly).
2738
273919 December 2012: Wouter
2740	- Fixup for libevent-2.1.2.
2741
274218 December 2012: Wouter
2743	- makedist makes sha256 for tarballs.
2744	- nsd-control start runs an absolute path to start sbin/nsd.
2745
274617 December 2012: Wouter
2747	- Fix for use with libev (no use of event.ev_flags).
2748
274912 December 2012: Wouter
2750	- 4.0.0b1 is beta1 version.
2751
275211 December 2012: Matthijs
2753	- Better ILNP RR parsing (thanks Stephane Bortzmeyer).
2754
275511 December 2012: Wouter
2756	- fix libevent=no signals on Solaris.
2757	- Fix handle of activated zones from timeout event.
2758	- contrib/nsd_munin_ updated with memory lookup for BSD.
2759
276010 December 2012: Wouter
2761	- implement --with-libevent=no.
2762
276310 December 2012: Matthijs
2764	- Bug #483: Better error messages for TSIG errors.
2765	- RFC 2845: If BADKEY or BADSIG, RCODE should be NOTAUTH.
2766	  Also, continue TSIG verification if NOTAUTH.
2767
27687 December 2012: Wouter
2769	- stable pidfile, xfrd is process leader and forks server-parent.
2770
27715 December 2012: Wouter
2772	- NSD4_imp_6 tag.
2773	- trunk has imp_7 implementation.
2774
27754 December 2012: Wouter
2776	- NSD-RRL documented in manpage.
2777
27783 December 2012: Wouter
2779	- Fixup exit of server-child while notifies are incoming.
2780
278128 November 2012: Wouter
2782	- RRL implements classification type RRSIG.
2783
278426 November 2012: Wouter
2785	- Fix to make nsd.udb portable between 32bit and 64bit machines.
2786	- Fix to make udb mmap work for FreeBSD8 when it grows significantly.
2787
278823 November 2012: Wouter
2789	- Fix compiler warnings and fix blocking pipes.
2790	- default tcp-count set to 100.
2791
279221 November 2012: Wouter
2793	- Implement rrl log of unblock for collision.
2794	- imported TLSA and ILNP support from NSD3.
2795
279619 November 2012: Wouter
2797	- Fix bug 480: libevent use when tcp-count is hit caused hang (in NSD4).
2798
27999 November 2012: Wouter
2800	- Log when NSD-RRL stops a stream from being blocked.
2801
28028 November 2012: Willem
2803	- Fix AXFR. Loop through the zone to transfer only.
2804
28052 November 2012: Wouter
2806	- Fix bug 478: declaration after statement (for gcc 2.95).
2807
28081 November 2012: Wouter
2809	- Fix default settings for RRL.
2810
281130 October 2012: Wouter
2812	- review fixup of RRL SLIP response.
2813	- RRL uses dev/random at start, nonRRL does not.
2814
281526 October 2012: Wouter
2816	- nsd-control repattern also changes rrl-ratelimit and whitelist limit.
2817
281817 October 2012: Wouter
2819	- Fix alignment problem in zone transfer pipeline code.
2820	- Fix random generator generating negative.
2821	- Fix udb radtree strspace creation bug.
2822
282315 October 2012: Wouter
2824	- Fix activated zone does not interrupt transfer.
2825	- Log of connection failure for zone transfer is neater.
2826
282712 October 2012: Wouter
2828	- Fix invalid time argument in nsd control (for OpenBSD).
2829
283011 October 2012: Wouter
2831	- Fix build on OpenBSD (Thanks Oliver Peter).
2832	- tpkg for RRL.
2833
283410 October 2012: Wouter
2835	- implement nsd-checkconf option use of rrl-whitelist.
2836
28379 October 2012: Wouter
2838	- with --enable-ratelimit you enable ratelimiting, with verbosity 2
2839	  it logs what is ratelimited for operational inspection.
2840	- unit test for rrl.
2841	- rrl uses mmap to save state across reloads.
2842	- rrl enum and u16 flags (dnskey type).
2843	- rrl whitelist and config.
2844
28458 October 2012: Wouter
2846	- Sync with unbound lookup3, has raninit value.
2847
28485 October 2012: Wouter
2849	- fix bug with event loop in zone transfer pipeline.
2850	- close xfrd_sock_p in server_child because otherwise due to use of
2851	  kqueue, it gets a broken pipe when that process exits (on FreeBSD).
2852
28534 October 2012: Wouter
2854	 - Fixup no use of internals ev_flags of libevent.
2855
28561 October 2012: Wouter
2857	- fix xfrd tcp skip.
2858
285921 September 2012: Wouter
2860	- tzset before chroot for correct timezone (from Camiel Dobbelaar).
2861	- pipeline support for AXFR and IXFR tcp queries.
2862
286311 September 2012: Wouter
2864	- writev support for TCP.
2865
286628 August 2012: Wouter
2867	- TXT records with components longer than 255 fail to parse,
2868	  but without segfault, it continues processing with non NULL value.
2869
287027 August 2012: Wouter
2871	- libevent in server_child.
2872
287321 August 2012: Matthijs
2874	- Fix bug#464: Conditionally define MAXHOSTNAMELEN
2875
287620 August 2012: Wouter
2877	- Fix hang on exit in xfrd.
2878	- optimized socket counts for zone transfer speed.
2879
288013 August 2012: Wouter
2881	- Fix xfrd libevent events.
2882
288310 August 2012: Wouter
2884	- libevent in xfrd.
2885
288626 July 2012: Yuri
2887	- Prioritize notify sender for requesting XFR.
2888	  (thanks Ilya Bakulin)
2889
289019 July 2012: Willem
2891	- Fix for VU#624931 CVE-2012-2978: NSD denial of service
2892	  vulnerability from non-standard DNS packet from any host
2893	  on the internet.
2894	  http://www.nlnetlabs.nl/downloads/CVE-2012-2978.txt
2895
289618 July 2012: Wouter
2897	- Fix bug#460: man page correction - identity.
2898
28999 July 2012: Wouter
2900	- delete temporary transfer files on exit of xfrd and reload.
2901	- when tasks are applied, reload checks if it must exit between
2902	  tasks, so that it can quickly exit when NSD is told to quit.
2903	- fix bug in apply_xfr that must use an udb_ptr because it shifts
2904	  when new allocations are made.
2905
29066 July 2012: Wouter
2907	- add xfrdir: "/tmp" option and configure --with-xfrdir="/tmp".
2908	  The nsd.task files and a subdirectory for zone transfers are
2909	  created there.
2910
29112 July 2012: Wouter
2912	- fix checkconf unit test and add test for backwards compatibility
2913	  for difffile: "x" statement.
2914
291529 June 2012: Wouter
2916	- Implemented /tmp/nsd.xfr.xxx/ to replace ixfr.db.  So that nsdc
2917	  patch is no longer needed.
2918
29198 June 2012: Wouter
2920	- Fix tpkg test cutest_qroot and rr-test for printout of algorithms
2921	  as numbers, and copy of DO flag to the answer.
2922	- pick up fd fix from 3_2 branch: Some more fd >= 0 to fd != -1 fixes
2923
292431 May 2012: Matthijs
2925	- Sync with 3.2 branch
2926
292724 February 2012: Wouter
2928	- Fix for qtype ANY for a wildcard domain in NSEC signed zone.
2929
29309 February 2012: Wouter
2931	- Update acxnlnetlabs.m4 version 21, fixed MEMCMP_BROKEN #undef line.
2932
293323 January 2012: Wouter
2934	- remove clang security warning about %n in format string.
2935
293620 January 2012: Wouter
2937	- Fix bug #430: segfault when MAX_INTERFACES set to more than 65K.
2938	- Fix configure for OpenIndiana sunos 5.11, acx_nlnetlabs.m4 update.
2939
294012 January 2012: Matthijs
2941        - Fix bug #421: truncate pidfile on shutdown, before unlink.
2942
294310 January 2012: Wouter
2944	- removed unused variables.
2945
294610 November 2011: Wouter
2947	- acxnlnetlabs.m4 updated to version 16, better lto check (a.out drop).
2948
29493 November 2011: Wouter
2950	- fflush zonelistfile after zone add or delete.
2951
29521 November 2011: Wouter
2953	- Fix -flto detection for llvm compiler on Lion.
2954
295510 October 2011: Matthijs
2956	- Don't clear the AA bit if there is an authoritative CNAME in the
2957	  answer section (as shown in RFC 1034, Section 6.2.7, 2nd example).
2958
295910 October 2011: Wouter
2960	- squelch EPIPE when writing AXFR, enable with verbosity 2.
2961
296226 September 2011: (Matthijs, from NSD3_2 branch)
2963	- Copy the DO bit to the response.
2964	- Don't return SERVFAIL on a domain that looks like a NSEC3
2965	  domain but is actually a empty non-terminal.
2966
296719 August 2011: Wouter
2968	- Fix segfault if no logfile is used.
2969
29705 August 2011: Wouter
2971	- Fix make from repeating action already taken.
2972	- Fix compile without openssl.
2973
29743 August 2011: Wouter
2975	- silence 'Broken pipe' messages in log (visible with verbosity 2).
2976	- fix makedist.sh for removal of patch, notify, xfer. new nsd-control.
2977	- tag 4.0.0-imp-5 created.
2978	- trunk is 4.0.0-imp-6 under development.
2979	- added nsd_munin_ script for statistics monitoring to contrib.
2980
29812 August 2011: Wouter
2982	- fix compile on Ubuntu 11.04 systems, detects cc system header issue.
2983
29841 August 2011: Wouter
2985	- fix checkconf test for remote control options.
2986	- fix warning on Ubuntu 10.04, fix autoconf 2.68 warning on NetBSD.
2987
298829 July 2011: Wouter
2989	- zones with no zonefile are not written to text (assumes you can
2990	  get AXFR and IXFR for the contents).  They are stored in nsd.db.
2991	- test for repattern.
2992
299328 July 2011: Wouter
2994	- nsd-control repattern reads TSIG and pattern configuration.
2995
299625 July 2011: Wouter
2997	- fixed tests for removed tools from nsd, with replacements.
2998	  replaced nsd-patch with nsd-control write. replaced nsd-notify with
2999	  ldns-notify. replaced nsd-xfer with dig -t axfr.
3000	- fix for xfrd restart if crashed. xfrd knows if a reload is
3001	  active at that time so it cannot start another one at the same
3002	  time.  New shortsoa track for start that does not use taskdb
3003	  in use by reload.  taskdb in use by crashed xfrd is recreated,
3004	  in case it is corrupt.  This keeps the nsd.db intact, keeps
3005	  reload running with its updated and keeps service from the
3006	  server processes active.
3007
300822 July 2011: Wouter
3009	- added contrib/nsd.init (nsdc.sh that only does start,stop).
3010	- removed nsdc.sh, nsd-xfer, nsd-notify, nsd-patch.
3011	  for rc.d: contrib/nsd.init, or platform specific init script.
3012	  nsd-xfer: see nsd-control transfer, or force_transfer.
3013	  nsd-notify: see nsd-control notify.
3014	  nsd-patch: see (cron job to) nsd-control write.
3015
301621 July 2011: Wouter
3017	- nsd-control notify, transfer and force_transfer.
3018	- fix for bug in write and reload zone option.
3019	- nsd-control zonestatus command.
3020
302120 July 2011: Wouter
3022	- reload can be given optional zone argument.
3023	- nsd-control reopen_logfile.
3024	- nsd-control write changed zonefiles.
3025
302618 July 2011: Wouter
3027	- Fix xfrd activation of zones to not break running zone transfers.
3028
302913 July 2011: Wouter
3030	- fix that signal causes stats to be printed to log.
3031	- fix stats without remotecontrol.
3032	- ignore notify and soainfo for deleted zone, if due to race they
3033	  arrive after the deletion.
3034	- tpkg test for nsd-control, addzone and delzone
3035
30365 July 2011: Wouter
3037	- fix link to ssl with FreeBSD make.
3038
30391 July 2011: Wouter
3040	- fix optimize compile to link with ssl.
3041
304229 June 2011: Wouter
3043	- nsd-control delzone zone.  Removes zone from zonelist.
3044	- stats includes number of zones.
3045	- RAXFR stat, which has not worked since NSD 1.2.4, reinstated.
3046	- print more memory statistics, for xfrd and config.
3047
304828 June 2011: Wouter
3049	- nsd-control addzone zone pattern.  Adds new zone, slave or master.
3050
305127 June 2011: Wouter
3052	- nsd-control stats and stats_noreset (if enabled at compile time).
3053	  nsd does not print statistics to logfile if period is 0.
3054
305523 June 2011: Wouter
3056	- -flto check supports clang compiler.
3057
305822 June 2011: Wouter
3059	- remote control, config, client, setup and status command.
3060	- reload nsd-control command.
3061	- stop nsd-control command.
3062	- verbosity nsd-control command.
3063
306414 June 2011: Wouter
3065	- Fix to have no authority NS set processing for CNAMEs.
3066
30679 June 2011: Wouter
3068	- fix bug that relptrs have to be initialized with rel_ptr_init() when
3069	  created and zeroed with rptr_zero before deletion.
3070	- tag 4.0.0-imp4 created
3071	- trunk is 4.0.0-imp5 under development.
3072
30738 June 2011: Wouter
3074	- nsd reads the zonelist file on start.
3075	- updated acx_nlnetlabs.m4 to version 11.
3076	- configure checks size of off_t and increase region-allocator
3077	  alignment to 8 if it is 64bit and alignment at 4.
3078	- fixed bug where not all references were removed before mmap was
3079	  synced to another process.
3080
30817 June 2011: Wouter
3082	- code to add and remove zonelist entries, and unit test.
3083
30846 June 2011: Wouter
3085	- fix unit tests for mmap with TODO and removal of -f in nsd-patch.
3086	- zone expiry is communicated via the mmap, and not via the pipes,
3087	  simplifying the code significantly as well as making a large number
3088	  of zones more feasible.
3089
30901 June 2011: Wouter
3091	- mmap used for parent-xfrd communication of tasks and task results.
3092	  SIGHUP is sent to xfrd so it can become a task in the normal
3093	  workflow. This can process about 4500 zones per second (this was
3094	  with lots of debug prints per zone, in debug compile). The mmaps
3095	  are file-backed with /tmp/ files.  They are removed on a clean exit.
3096	- nsd.db and tmp mmaps are created with mode 0600 for safety.
3097	- updated flag removed, nsd-patch always in -f force mode (-f removed)
3098	  and writes all zones always. Its role is taken over by task results.
3099
310030 May 2011: Wouter
3101	- Fix Makefile for U in environment, since wrong U is more common than
3102	  deansification necessity.
3103
310427 May 2011: Wouter
3105	- xfrd is forked before the database is read in, thus it does not
3106	  consume the memory of the database.  It can be reforked on a crash,
3107	  which is like the current case.  Difffile is cleaned by main process
3108	  and the soa serials are all sent via pipe instead of via forkmem.
3109
311024 May 2011: Wouter
3111	- implemented patterns in the nsd.conf file.
3112	  they can be instantiated with include-pattern: x.
3113	  existing zone definitions keep working (backwards compatible), such
3114	  zones really have an implicit pattern and cannot_delete flag set.
3115	- work on zonelist read and storage.
3116
311720 May 2011: Wouter
3118	- from NSD_3_2 branch the fix: bug if the zonefile is changed for a
3119	secondary but stored transfers are applied, and stop ixfr to empty.
3120	The zone is flagged with error, and the good zone is still in nsd.db
3121	for NSD4.
3122
312317 May 2011: Wouter
3124	- unit test for code coverage on nsec3 ixfr.
3125	- tag 4.0.0-imp3 created
3126	- trunk is 4.0.0-imp4 under development.
3127
312813 May 2011: Matthijs
3129	- Fix bug #381 - Binary escaped and transfers.
3130
313113 May 2011: Wouter
3132	- Unit test nsec3 salt change and fix for sanity check of nsec3 chain.
3133	  pretty prints the nsec3 parameters if verbose.
3134
313512 May 2011: Wouter
3136	- more unit test for nsec3 precompile changes.
3137	- unit test for salt change, rehash in udb fix, remove last NSEC3
3138	  from chain works, NSEC3PARAM RR fixed up if RR added or removed
3139	  from NSEC3PARAM RRset, hashtrees cleared properly, precompile clear
3140	  more thorough (not dependant on nsec3_conditions).
3141
314211 May 2011: Wouter
3143	- fixes for nsec3 precompile code: precompile for empty nonterminals
3144	  created when an RR is added. If SOA removed, precompile stays
3145	  coherent even though domain_find_zone no longer returns correct zone.
3146
314721 April 2011: Wouter
3148	- unit test and fixes in nsec3 precompile code.
3149
315020 April 2011: Wouter
3151	- incremental NSEC3 precompile.
3152
315314 April 2011: Wouter
3154	- remove chnum. Added numlist sorted by domain.number.
3155	  domains that are not used are removed.
3156
315713 April 2011: Wouter
3158	- Fix is_existing flag for ENT when domain that has a shared ENT
3159	  is deleted by IXFR.
3160	- zonec can parse strings with RR in it.
3161	- unit test for namedb.
3162
31638 April 2011: Wouter
3164	- porting complete.
3165	- tag 4.0.0-imp2 created
3166	- trunk is version 4.0.0-imp3.
3167
31687 April 2011: Wouter
3169	- ported to sunos 4.1.4, the unit test works (udb, radtree in mmap).
3170
31716 April 2011: Wouter
3172	- UDB_CHECK is enabled if --enable-checking is used.
3173	  Because it checks the pointer-administration lists it slows down.
3174	- udb-inspect has feature -l that lists zones (and RRs) in nsd.db.
3175	- fix memory leak by zonec; the region_cleanup triggers too late.
3176	- set listen TCP_BACKLOG to 16 by default, it avoids connect reset
3177	  by peer in 1000-zones transfer on an ultra10, thus for many-zones.
3178	- default xfrd-reload-timeout to 1 second.
3179
31805 April 2011: Wouter
3181	- Fix uninitialised value in xfrd nsd_soa, the rdata_count.
3182	- Unit test for update of the nsd.db with new contents.
3183	- Fix array bounds check in radtree-search function.
3184
31854 April 2011: Wouter
3186	- removed zonec from tests. fix unknown_rr test, enable ipseckey test.
3187	  increased timeouts on tests that are hard on the filesystem.
3188	- Fixed IPSECKEY printout by nsd-patch.
3189
319030 March 2011: Wouter
3191	- nsd edits nsd.db for IXFR and AXFR messages.  since xfrd already
3192	  checks zone transfers completely for syntax those errors cannot
3193	  happen, if they do (memory, disk error) the file is left dirty,
3194	  to be recreated on the next start (and the process dies).
3195
319629 March 2011: Wouter
3197	- nsd recreates nsd.db if it has not been closed properly or is
3198	  corrupted (bad header or wrong file format).
3199
320028 March 2011: Wouter
3201	- NSD without zonec.  NSD loads zonefiles on start.
3202	  NSD stores NSEC3hashes on disk.
3203
320425 March 2011: Wouter
3205	- Fix bug #365, you can set NSDC_ZONEC_VERBOSE and NSDC_PATCH_STYLE
3206	  in the environment where nsdc runs.
3207	- Fix bug #375, typos in nsd.conf.5.
3208	- First step of bug #369: RRSIG DNSKEY sets zone to be treated DNSSEC.
3209	- Fix bug #302, nsd accepts XFR but refuses to re-read the slave zone.
3210	- NSD4 work: removed zonec, nsdc patch does not write text files
3211	  for slave zones (as if option is always to binary, this capability
3212	  returns later), nsdc patch deletes the ixfr.db.
3213	  kill-HUP rereads zone files that have changed.
3214
321524 March 2011: Wouter
3216	- compile fixes for BSD. preserve RRset order.
3217
321823 March 2011: Wouter
3219	- udbzone, store and read zone data in the random-access udb format.
3220
322121 March 2011: Wouter
3222	- udbradtree works. udb-inspect tool can print radtree details.
3223
322416 March 2011: Matthijs
3225	- undo fix bug#325: messes up dname compression
3226
322714 March 2011: Wouter
3228	- udb code added.  uses lookup3 from unbound (public domain).
3229	- unit test for radix tree in cutest.
3230	- unit test for udb in cutest.
3231	- udb-inspect tool to printout internals of udb files.
3232	  for debug, not installed or built by default.
3233	- removed --disable-radixtree option.
3234
323511 March 2011: Wouter
3236	- Removed precompile features, speed gain took too much memory.
3237	- domain number to size_t.
3238
32399 March 2011: Wouter
3240	- DNAME synthesis of CNAME.  Uses TTL of the DNAME record.
3241	- nsec3 and wildcard code.  No additional section for wildcards.
3242	  Also CNAME and DNAME replies contain only that record (and synth
3243	  CNAME), the chain is not followed.
3244
32458 March 2011: Wouter
3246	- precompile work:
3247		class ANY gets AA flag, SOA and type-NS processing, just
3248		like BIND (9.6) and it simplifies processing for NSD.
3249	  other than compression difference (precompile compresses smaller),
3250	  there are no differences in a 49000 query testset against the root,
3251	  without EDNS.
3252
32537 March 2011: Wouter
3254	- check chown value and report high verbosity its error.
3255
32563 March 2011: Matthijs
3257	- fix #bug352: fix hardcoded paths in manpages.
3258
32592 March 2011: Matthijs
3260	- fix #bug354: make realclean cleans too much
3261	- added make devclean for cleaning up autoconf and automake stuff
3262	- Fix hardcoded paths in nsd.conf.sample and nsd.conf.5
3263
326424 February 2011: Matthijs
3265	- fix #bug350: refused notifies should log client ip.
3266
32672 March 2011: Wouter
3268	- Fix AXFR service with radix tree.
3269	- cutest for speed of answer encoding, and format of answers for root.
3270
32711 March 2011: Wouter
3272	- after merge, remove double -I. from makefile.
3273	- radixtree is default.  Nicer makefile and no warnings from unused
3274	  flex functions.
3275
32761 March 2011: Wouter
3277	- merge with trunk r3181:
3278	24 February 2011: Matthijs
3279		- fix #bug350: refused notifies should log client ip.
3280	24 February 2011: Wouter
3281		- fix bug#362: outgoing-interface and v4 vs. v6 leads to spurious
3282		  warning messages.
3283		- fix bug#363: nsd-checkconf -v does not print outgoing-interface ok.
3284		- fix that nsd-checkconf -o outgoing-interface omits NOKEY.
3285	23 February 2011: Wouter
3286		- fix for bug#357, make xfrd quit with many zones.
3287
328823 February 2011: Wouter
3289	- Merge trunk r3151.
3290		22 February 2011: Matthijs
3291			- Patch Jakob Schlyter (setusercontext before chroot).
3292		18 February 2011: Wouter
3293			- overhaul of testset, with port uniqueness and fast start and stop.
3294		11 February 2011: Wouter
3295			- added test case to do with bug357.
3296		24 January 2011: Matthijs
3297			- Patch Tom Hendrikx (only errors to stderr when doing nsdc patch).
3298
329917 February 2011: Wouter
3300	- Fix leak of compressiontable when the domain table increases in size.
3301	- added test case to do with bug357.
3302
330310 February 2011: Wouter
3304	- Merged with trunk r3115 changes:
3305		20 January 2011: Wouter
3306			- Fix on shutdown, then getaddrinfo acquired data uses freeaddrinfo.
3307		19 January 2011: Wouter
3308			- Bug #348: no -I/usr and -L/usr for libcrypto in /usr.
3309		5 January 2011: Matthijs
3310			- Fix nsdc update and nsdc notify
3311			- Force outgoing interface to be a single range acl
3312			- Update documentation about acl options
3313			- Code review
3314			- Fix nsdc so it can use hmac-sha* tsigs
3315			- Bug #347: NSEC3 nodata QTYPE=DS not at delegation mismatch
3316		4 January 2011: Yuri
3317			- Doc spelling error, bug#345
3318		15 December 2010: Wouter
3319			- fix race condition when nsd is stopped while a reload is in
3320			  progress, often when rc.d does nsdc patch; nsdc stop in sequence.
3321			  reload is now signalled to stop too.
3322		10 December 2010: Matthijs
3323			- fix bug#306: applied documentation patch
3324			- fix bug#253: now also for QTYPE=DS.
3325		12 October 2010: Wouter
3326			- Fix compilation on SunOS4.
3327		24 September 2010: Matthijs
3328			- Bug #328: nsd-checkconf overrun
3329		1 September 2010: Yuri
3330			- Support for huge TXT records.
3331		23 Aug 2010: Wouter
3332			- fix bug#325: remove stale files from cvs from repo.
3333		16 Aug 2010: Yuri
3334			- zonec, MAXRDATALEN check was off by one.
3335		9 Aug 2010: Matthijs
3336			- nsdc return 1 outside function, should be exit 1
3337			- Bug #320: arc4random
3338		2 Aug 2010: Matthijs
3339			- Bump to 3.2.7.
3340		21 July 2010: Wouter
3341			- NUM_RECV_PER_SELECT 100 implemented, configure check if kernel
3342			  supports this.
3343
334417 January 2011: Matthijs
3345	- Bump to 3.2.8.
3346
33475 January 2011: Matthijs
3348	- Fix nsdc update and nsdc notify
3349	- Force outgoing interface to be a single range acl
3350	- Update documentation about acl options
3351	- Code review
3352	- Fix nsdc so it can use hmac-sha* tsigs
3353	- Bug #347: NSEC3 nodata QTYPE=DS not at delegation mismatch
3354
335520 July 2010: Wouter
3356	- Branched from trunk. Added radix tree.
3357	- use -fwhole-program if gcc supports it.
3358
335919 July 2010: Matthijs
3360	- fix bug#314, NSEC next field now correctly escapes spaces.
3361	  Also fixes label overflow issue.
3362	- Put back HAVE_SSL.
3363	- Code reviews.
3364	- Add donor text.
3365
33666 July 2010: Wouter
3367	- Compiles on Minix 3.1.7; checks ss_family, suseconds_t, some
3368	  warning fixes.  Needs socketpair to work, e.g.
3369	  http://wiki.minix3.org/en/SummerOfCode2010/UnixDomainSockets.
3370
33712 July 2010: Wouter
3372	- Put back CHECK_SSL in configure (removed with disable-tsig).
3373
337417 June 2010: Matthijs
3375	- Expand command line option '-a' and config option 'ip-address:'
3376	  with port number.
3377	- Removed --disable-nsid, --disable-dnssec, --disable-tsig
3378
337914 April 2010: Matthijs
3380	- Bump to 3.2.6.
3381
338214 April 2010: Matthijs
3383	- uintptr_t fallback value to void*
3384	- Backwards compatibility for MAP_ANONYMOUS
3385	- Tag 3.2.5.
3386
338731 March 2010: Matthijs
3388	- Commit b64_pton optimalized compat code (Martin Svec).
3389	- Commit (experimental) mmap-alloc-namedb patch (Martin Svec).
3390	- Commit parse-token-leaks patch (Martin Svec).
3391
339227 March 2010: Wouter
3393	- fix bug#303: misspelled error message.
3394
339519 March 2010: Wouter
3396	- documented nsid: "hex string" setting in nsd.conf.sample.
3397
339824 February 2010: Matthijs
3399	- nsid: option
3400	- Enable NSID support by default
3401	- --with-chroot configure option
3402	- Less stupid chroot error handling
3403
340415 February 2010: Matthijs
3405	- Skip memory cleanup to speed up reload (Martin Svec)
3406
34071 February 2010: Wouter
3408	- compat code for memcmp unsigned comparisons.
3409
341021 January 2010: Wouter
3411	- fixup debug sprintf to snprintf.
3412
341321 January 2010: Matthijs
3414	- Secure string functions, including compat code for strlcat.
3415	- Randomness utility function
3416	- Prepare for default chroot
3417
34186 January 2010: Wouter
3419	- check write errors when marking commit failed when difffile is broken.
3420
34216 January 2010: Matthijs
3422	- Move to 3.2.5
3423
342423 December 2009: Matthijs
3425	- Store new options in nsd structure.
3426
342722 December 2009: Matthijs
3428	- New options 'ipv4-edns-size:' and 'ipv6-edns-size'.
3429	- Bug 276
3430	- Bug 286
3431	- Bug 288
3432
343321 December 2009: Matthijs
3434	- New option 'tcp-query-count:'.
3435	- New option 'tcp-timeout:' and configure option '--with-tcp-timeout'.
3436	- New zone option 'notify-retry:'.
3437
343811 December 2009: Wouter
3439	- Disable UDP IPv4 DF flag on Linux/FreeBSD/AIX with socket option.
3440
344120 November 2009: Matthijs
3442	- NSID bugfix: NSD did not recognize NSID in the query.
3443
34449 September 2009: Matthijs
3445	- DLV support
3446
344718 August 2009: Matthijs
3448	- Bug 269.
3449	- Typo: logincap.h -> login_cap.h
3450
345112 August 2009: Matthijs
3452	- Maintainers feedback
3453
345410 August 2009: Matthijs
3455	- Code review.
3456	- Also send errors to /dev/null in controlled_stop.
3457	- chown nsd.db
3458
34597 August 2009: Matthijs
3460	- Bug 266: don't have strptime build error
3461
346228 July 2009: Matthijs
3463	- Bug 263: make TSIG algorithms comparison case insensitive.
3464
346523 July 2009: Matthijs
3466	- Patch Paul Wouters for NSD using hardcoded name.
3467
346813 July 2009: Matthijs
3469	- Bug 236: allow RRs before the SOA RR.
3470	- Bug 253: No need for NS RRset in authority section, when returning
3471	  final answer for QTYPE=DNSKEY.
3472
347329 June 2009: Wouter
3474	- patch for use of Linux IPV6_MTU option, so that on linux the default
3475	  EDNS UDP size advertised becomes 4096 over IPv6.  It fragments the
3476	  packets using the IPv6 minimum MTU.
3477
347819 May 2009: Matthijs
3479	- Clean up configure script (install hickup)
3480	- Bug 249: Remove unnecessary LLONG_MIN and LLONG_MAX code.
3481	- Replace strtoll code with own strtoserial function.
3482	- Move up to 3.2.3.
3483
348411 May 2009: Matthijs
3485	- Add Off-by-one test
3486
34876 May 2009: Matthijs
3488	- Small fix in SO_REUSEADDR warning log message.
3489	- Off-by-one bugfix (thanks Ilja van Sprundel, IOActive)
3490
349129 April 2009: Matthijs
3492	- A more ensured do_stop (useful fo nsdc restart).
3493
34942 February 2009: Matthijs
3495	- Bugfix #234.
3496	- Bugfix #235.
3497	- Reset 'error occurred' after notifying an error occurred at the $TTL or
3498		$ORIGIN directive (Otherwise, the whole zone is skipped because the
3499		error is reset after reading the SOA).
3500
35012 February 2009: Matthijs
3502	- Bugfix: return BADVERS when EDNS version > 0, instead of 0x1<FORMERR>.
3503
350419 January 2009: Matthijs
3505	- Bug 230: nsd-*: use stdout for non-error output (instead of stderr).
3506	- Don't do strptime test when cross compiling.
3507
350817 January 2009: Jelte
3509	- Fix file rotation when no logfile but chroot.
3510
35118 January 2009: Matthijs
3512	- New nsd-patch option -o dbfile (set output.db)
3513	- update nsdc to deal with the new nsd-patch options
3514	- strptime compat fix
3515
35166 January 2009: Matthijs
3517	- New nsd-patch option -s (skip writing zonefiles)
3518	- Removed some region_create memchecks (not needed)
3519
35205 January 2009: Matthijs
3521	- Bug 218
3522	- Bug 222
3523	- Replace SHA256_DIGEST_LENGTH with nicer HAVE_EVP_SHA256
3524
352510 December 2008: Matthijs
3526	- Bugfix: better error message when ixfr.db cannot be read
3527
352818 November 2008: Matthijs
3529	- chown logfile, don't do file rotation if logfile is outside absolute
3530		and outside chroot.
3531
353217 November 2008: Matthijs
3533	- File rotation for nsd.log when owned by nsd (+ tpkg test).
3534	- Only AXFR fallback if master responded NOTIMPL or FORMATERR on IXFR
3535		request.
3536	- allow-axfr-fallback option.
3537
35387 November 2008: Matthijs
3539	- Bugfix: don't fclose if logfile == NULL.
3540
354130 October 2008: Matthijs
3542	- Allow escape characters in literal dnames
3543	- Fix typo in zonec manpage
3544	- Some fixes from code review
3545
354620 October 2008: Matthijs
3547	- Redo bugfix literal domain names in rdata (code adjustment)
3548	- Added tests for case sensitive dns names and "Bug #162"
3549	- Adjust nsd-patch to new ixfr.db format
3550
355114 October 2008: Matthijs
3552	- Only SO_LINGER when outgoing port is set
3553	- Reset diff_skip when a new difffile is created (parts in the difffile
3554		now have a timestamp).
3555	- Undo bugfix literal domain names in rdata (code adjustment)
3556	- Split up dname_parse to parse literal dnames and normalized dnames.
3557
35583 October 2008: Matthijs
3559	- setsockopt SO_LINGER, for portability outgoing-interface (BSD/Solaris)
3560
35611 October 2008: Matthijs
3562	- Configure the source ip-address for notifies by the master and zone
3563		transfer requests by the slave in nsd.conf.
3564	- Previously added source hostname/ip and port configuration for
3565		nsd-notify and nsd-xfer
3566	- Finetuned nsdc for nsdc notify and nsdc update
3567
356829 September 2008: Matthijs
3569	- Bugfix: only normalize domain names in rdatas when rrtype is listed in
3570		RFC 4034, section 6.2: Canonical RR Form.
3571	- Update TODO list
3572
357325 September 2008: Matthijs
3574	- Fix bug where hmac-sha256 was in algorithm table, but could not be
3575		retrieved by name or id.
3576	- Additional arguments for nsd-notify and nsd-xfer: set outgoing
3577		hostname/ip-address and source port.
3578	- Additional TODO entry: optimize code in nsd-* programs.
3579
35808 September 2008: Matthijs
3581	- RFC 4635, bugfix #130: support for hmac-sha1 and hmac-sha256 tsig
3582		algorithms.
3583	- modify and add tpkg tests for hmac-sha1 algorithms.
3584
35852 September 2008: Matthijs
3586	- AXFR fallback when IXFR/UDP failed on all masters
3587	- Bugfix: strip off chroot value in corner cases
3588	- Additional debug and verbose log messages
3589
359029 August 2008: Matthijs
3591	- IXFR allow UDP option
3592
359326 August 2008: Matthijs
3594	- Code layout, additional comments and documentation typo fixes
3595	- IXFR over TCP, no longer UDP
3596
359717 July 2008: Matthijs
3598	- Make the maximum number of interfaces configurable.
3599	- Write pidfile *after* successful server initialization,
3600		instead of writing, and unlink if fail.
3601
360216 July 2008: Matthijs
3603	- Set upcoming release to 3.1.1
3604	- Wouter: fixed memory leaks that happened on error, mostly on
3605	  zone transfer errors.
3606
360711 July 2008: Matthijs
3608	- Avoid race condition in nsdc: let nsd server update pidfile before
3609		closing old parent process.
3610
36118 July 2008: Jelte
3612	- Fixed NSEC3 memory leak in the case NSEC3 is not needed.
3613
36147 July 2008: Matthijs
3615	- Bugfix #191
3616
36179 June 2008: Matthijs
3618	- When comparing RRs, do not compare TTL values (since the same record
3619	  with different TTL values are considered equal).
3620	- Fixup some more unaligned memory access that could occur when
3621	  reading ixfr.db.
3622
362319 May 2008: Matthijs
3624	- Do not always log tcp read errors, only when real error or high verbosity
3625
362628 April 2008: Matthijs
3627	- Bugfix #172 (misleading error from zonec)
3628
362927 March 2008: Matthijs
3630	- Port some branch modifications to trunk
3631
363228 February 2008: Matthijs
3633	- Do not answer nsec3 wildcard information when DO bit is not set
3634
363519 February 2008: Matthijs
3636	- Fixed strptime bug (for MacOS Leopard)
3637
363822 January 2008: Matthijs
3639	- Add configuration for chkconfig to control nsd service (bug 164)
3640
364115 January 2008: Matthijs
3642	- Fixed bug 157 where nsd would return FORMERR if edns query is
3643	  received with version set to zero and rdlen is larger than zero.
3644
36458 January 2008: Wouter
3646	- no warning about optout records. also no warning about missing
3647	  nsec3 records.
3648	- check for hash(apex)==nsec3 with SOA bit was done in duplicate.
3649	- removed old commented out code
3650	- using SOA bit in NSEC3 typemap to detect parameters
3651	- using nonhashed NSEC3 to prove qtype=NSEC3 nxdomains
3652	- prints for debugging.
3653	- nicer comment on nsec3_lookup.
3654
36557 January 2008: Wouter
3656	- Fixup nsec3 tests, they need zonesdir: "." in conf files.
3657	  The tests pass.
3658	- configure default is --enable-nsec3. Disabling this will save 20% more
3659	  memory (for very large zones). Moved tests to test on commit.
3660	- set RRTYPE numbers for NSEC3=50, NSEC3PARAM=51.
3661	- fixup checkconf test - updated parser lexer gives syntax error
3662	  on some garbage instead of parse error. Parselexer is updated for
3663	  new options (hide-version, verbosity).
3664	- removed highrange rrtype code. fixup cutest for that.
3665	- speedup of prehash code.
3666		- skip nonexistent domains (operator.example.com).
3667		- skip only-nsec3 domains (that could be 2x speedup)
3668		- skip glue nameserver domains (for TLD with 2 glue per
3669		  delegation this is a 3x speedup).
3670		- skip the prehash_domain for delegation points, which saves
3671		  another 2/3 hash operations, 3x speedup.
3672	- printout how long nsec3 prepare took (verbosity >= 1).
3673
36743 December 2007: Matthijs
3675	- Fixup bug where data related files are looked up in the wrong
3676	  directory when chrooted with chrootdir ending with a slash.
3677
367826 November 2007: Matthijs
3679	- Fixup bug start nsd while already running: do not initialize server,
3680	  since it is already running.
3681
368215 November 2007: Matthijs
3683	- Changed man pages format from mdoc to mansun, to support the Solaris OS.
3684	- Better logging for nsd-notify (show 'broken' zone)
3685
368613 November 2007: Wouter
3687	- CREDITS and RELNOTES now in utf-8.
3688
368912 November 2007: Matthijs
3690	- Changed man pages according to bug 162.
3691
369230 October 2007: Wouter
3693	- Fixup for skip after unknown deleted IXFR RR, otherwise processing
3694	  would continue at the wrong spot in the packet and process the IXFR
3695	  as if it were malformed.
3696	- added unit test for this in long (needs ldns-testns, updated it).
3697	- added unit test for rollback of malformed zone transfers.
3698	  Fixup for it, and fixup in ldns-testns to be randomport and
3699	  copy id for hex packets.
3700
370129 October 2007: Wouter
3702	- Fixup bug where malformed IXFR replies cause partial processing in
3703	  reload (or nsd-patch or nsd-startup). One result is multiple SOA
3704	  records in zone apex. Fixup rolls back the zone transfer, and waits
3705	  for NSD to try to load again.
3706
370726  October 2008: Wouter
3708	- small fix in descriptive text in sample config for debug-mode.
3709
37109 October 2007: Mark
3711	- Change default location of: nsd.db, ixfr.db & xfrd.state to
3712	  /var/db/nsd.
3713
37145 October 2007: Wouter
3715	- Fixup manual page entry for allow AXFR to anyone.
3716
37173 August 2007: Mark
3718	- Report source and zone for denied AXFR attempts.
3719
372025 July 2007: Wouter
3721	- bind2nsd to 0.5.0, fixup of includes, key{} handling.
3722
372319 July 2007: Wouter
3724	- bind2nsd to 0.4.8, fixup of include bug.
3725
372618 July 2007: Wouter
3727	- added contrib for bind2nsd, Al Stone provided an abridged version
3728	  that neatly fits for contrib.
3729
373017 July 2007: Wouter
3731	- fixup commithooks.
3732
373316 July 2007: Wouter
3734	- Added reference to http://bind2nsd.sourceforge.net/ to
3735	  contrib/README.
3736
37373 July 2007: Mark
3738	- Zone compiler now gives more sane error message when out of
3739	  diskspace.
3740	- Fixed a call to drill in tpkg that made a test check bind instead of
3741	  nsd.
3742
37432 July 2007: Mark
3744	- Remove last traces of mmap usage.
3745	- Some cleanups in tpkg.
3746
374724 April 2007: Mark
3748	- Added "hide-version" configuration setting. Enabling this feature
3749	  stops NSD from answering to CHAOS class version requests.
3750
375119 April 2007: Wouter
3752	- Compiled on minix 3.1.3 and make some adjustments to ease porting.
3753	  ECONNABORTED is checked for. sys/select.h included in nsd-notify.
3754	  SO_REUSEADDR failure is not fatal. PF_INET compat code added.
3755	  If you compile yourself; strptime and socketpair need compat code.
3756
375713 April 2007: Wouter
3758	- Minor tweak to nsec3.c, more elegant handling of malformed nsec3
3759	  records from a zone transfer.
3760
376110 April 2007: Wouter
3762	- Fixup ignored return value in region-allocator. Now returns a NULL
3763	  memory allocation failure and leaves region in a consistent state.
3764
376520 March 2007: Wouter
3766	- Released 3.0.5.
3767	- (for 3.0.6) -O2 test for Alpha moved to saner position.
3768
376916 March 2007: Wouter
3770	- port configure to AIX, removed warning on ALIGNMENT in region code.
3771	  defined _ALL_SOURCE to get recent C definitions on AIX.
3772	- improved nsec3.h comments.
3773
377422 February 2007: Wouter
3775	- Zonesdir default is now /etc/nsd.
3776	  So that the invocation directory is not used to dump files into.
3777	  The user can change the zonesdir by editing the config file.
3778	  The directory is created by install, if not an error is printed.
3779	- updated tpkg tests to use current dir for testing.
3780	- tcp connections that drop do not spam the log file.
3781	  Unless verbosity is set high.
3782
378319 February 2007: Wouter
3784	- Fix empty line printed with warning on 'force zone transfer'.
3785
378615 February 2007: Wouter
3787	- Check for EPROTO definition to compile on FreeBSD4/Alpha.
3788
378913 February 2007: Mark
3790	- Debug flag (-d) behavior changed. Nsd now also forks children when
3791	  run in debug mode.
3792	- Added verbosity mode (-V <level>) for extra operational logging.
3793
37948 January 2007: Wouter
3795	- README text on interface configuration added.
3796
37972 January 2007: Wouter
3798	- Fixup accept() that could block due to already closed connection.
3799	  Made listen() nonblocking, ignores errcodes that indicate closed tcp.
3800
380129 January 2007: Mark
3802	- Handle the new CERT RDATA types defined in RFC 4398 (submitted
3803	  by Mans Nilsson).
3804	- Change nsd-notify retry timer from linear into exponential backoff
3805	  (submitted by Mans Nilsson).
3806	- Due to a small bug in a comparison statement, zonec would fail
3807	  on the parsing of unknown CERT types. This got triggered by the
3808	  first bugfix today, as that one shouldn't have been discovered in
3809	  the first place. Took the opportunity to sanitize two other
3810	  comparison statements related to strtol().
3811
381224 January 2007: Wouter
3813	- Tentative change to set UDP sockets nonblocking. Perhaps it
3814	  helps Howard.
3815
381619 January 2007: Wouter
3817	- NSEC3 work. prehash printed only once with time taken to prepare.
3818	- prints are now only in DEBUG mode (except errors).
3819	- rr descriptor counts for NSEC3 updated, has an extra field flags.
3820	- now NSEC3PARAMs with flags!=0 are ignored, as per draft-09.
3821	- Fixed where only first NSEC3PARAM was properly detected.
3822	- Added tpkg in manual (because you need to compile with nsec3)
3823	  that performs the test queries from draft-09 and checks them.
3824	- Made tpkg to test NSEC3 parameter detection. NSD will skip any
3825	  NSEC3PARAMs that don't work until the first working one is found.
3826	  Also, this means unknown hash algorithms are simply ignored.
3827	  A zone that uses exclusively unknown hash algorithms for NSEC3
3828	  will give errors on loading (or after zone transfer) but NSD
3829	  will load and serve the zone (but no NSEC3s are returned).
3830	- added tpkg in manual to test parent side DS answers.
3831	  These follow a different code path than child side DS.
3832	- Will allow NSEC3s(and signatures) below a DNAME.
3833	- A query for an NSEC3 ownername will lead to DNAME redirection
3834	  as if the NSEC3 did not exist.
3835	- Test package in manual that tests NSEC3 and DNAME in the apex.
3836	- Changed NSEC3 memory requirements from 5 pointers per domain name
3837	  to 3 pointers and 2 bits.
3838	- Added jumpstart for nsec3 search, will greatly speed up optout
3839	  zone nxdomains. At the cost of one ptr per domain name.
3840	  The speedup also speeds up the nsec3 prepare stage.
3841
384218 January 2007: Wouter
3843	- Created 3.0.4 release tag.
3844	- 3.0.5 number in trunk.
3845	- add nsd.spec patch from Farkas Levente to contrib.
3846	- NSEC3 new wireformat and presentation format from draft-09.
3847
384811 January 2007: Wouter
3849	- The message 'server .. closed cmd channel' is now priority INFO.
3850	  This to reduce the 'error' amount in the logs.
3851	- On error in a tcp request, set to retry next instead of waiting
3852	  for the tcp timeout.
3853
38549 January 2007: Wouter
3855	- TSIG acl matching changed so that NOKEY allow-notify entries match
3856	  only queries without a tsig. Otherwise NSD would crash.
3857	  This only affects servers that have allow-notify: ip NOKEY and
3858	  someone sends a TSIG signed notify from that ip.
3859	- test package for that.
3860	- Fix for reply to notify messages with ANCOUNT wrong. The ack
3861	  to notify messages that passed the ACL, and had a SOA in the answer
3862	  section of the query, included wrong RR counts in the header.
3863	- test package for notify reply wireformat.
3864
38658 January 2007: Wouter
3866	- ipc_send_blocked will not lead to busy waiting on it, but will block
3867	  in select, until SOA_END comes by.
3868	- server_main sends SOA_END if reload crashes, to xfrd. So that xfrd
3869	  can set ipc_blocked=0 and can_send_reload=1; and thus resume service,
3870	  assuming that the crash was a temporary condition.
3871	  This will lead to trying every reload-timeout seconds to reload
3872	  if it is a permanent condition. Which is more obvious to the
3873	  operator.
3874	- put the error "error: diff: RR ns.kiev.ua. already exists" in
3875	  debug mode only. Zone transfers with this error are liberally
3876	  accepted, and we should not spam the logfile.
3877	- empty zones will not be retried forever every 10 seconds,
3878	  but exponential backoff to a max of every 4 hours.
3879	  The exact value is randomised to spread out attempts.
3880
38815 January 2007: Wouter
3882	- Fixed --zonesdir=<path> for configure. The value did not get used
3883	  as a default value. Now it is used as a default value. If a
3884	  default value is set for zonesdir, you can go to a 'no value
3885	  specified' by giving the empty string, zonesdir: "" in nsd.config.
3886	- Fixed checkconf.tpkg for this change. nsd-checkconf will
3887	  output zonesdir: "" as this is the default for --zonesdir.
3888
38892 January 2007: Wouter
3890	- Added contrib script from Stephane Bortzmeyer to convert NSD 2 to
3891	  NSD 3 config files. Converts secondary zones and TSIG keys.
3892	- Made config conversion script skip empty lines.
3893	- Made config conversion script convert primary zones (and notify).
3894	- Nsdc control script will exit with 'nsd startup failed.' if nsd
3895	  fails to start (due to bad config file for example).
3896
389715 December 2006: Wouter
3898	- Removed dlopen() checks from configure.ac, NSD3 no longer has
3899	  dynamic plugin support (since 3.0.0).
3900	- added .rpm spec file to contrib.
3901	- Updated README to remove reference to buildzones script.
3902
390312 December 2006: Wouter
3904	- Added missing include to ipc.c to compile on SunOS.
3905	- Cast to avoid signed/unsigned comparison in compat/inet_ntop.c.
3906
390711 December 2006: Wouter
3908	- Added test to check for CNAME and other data error by zonec.
3909	  Currently NSEC, NSEC3, RRSIG, SIG, NXT are allowed next to CNAME.
3910	- Fixup unaligned memory access that could occur when reading ixfr.db
3911	  with a partial transfer inside.
3912	- RR type WKS (well known service) was not printed correctly,
3913	  htons() was forgotten when calling getservbyport.
3914	- NSD does not complain about not being able to read the db CRC
3915	  when all that happens is the file became longer or shorter.
3916
39178 December 2006: Wouter
3918	- Moved down max XFRD UDP sockets for zone transfer queries to 100
3919	  down from 300. This makes the total socket max at 200, so it fits
3920	  easily under 256 ulimit (a common default).
3921
39227 December 2006: Wouter
3923	- Improved error message to help operator.
3924	- created 3.0.3 svn tag.
3925	- default of zonesdir corrected (no directory is default).
3926
39274 December 2006: Wouter
3928	- updated test packages. Moved 213_large from manual to long.
3929	  size_0, source_port_0 made more working (needs root permission).
3930
39311 December 2006: Wouter
3932	- Moved xfrd ipc and reload handlers to front of event handler
3933	  lists for a 10% speedup in xfrd.
3934	- Fixed so that NSD no longer interrupts zone transfers when
3935	  a notify comes in for that zone. Added package to test it.
3936	- Fixed warning on Solaris 10.
3937
393830 November 2006: Wouter
3939	- Test for fallback in getaddrinfo more portable.
3940	  Ported to FreeBSD 6.1 without inet6.
3941	- New quit sync had a problem with blocking in dispatch. Fixed.
3942	- reload will retry quit_sync if nothing happens.
3943	- parent tries to empty the pipes before closing them on quitsync.
3944	- xfrd does not send reload when previous reload request busy.
3945	- netio will only deliver the number of bits from select
3946	  and then stop. Optimisation.
3947
394829 November 2006: Wouter
3949	- Fixed getaddrinfo error message to be more descriptive.
3950	- Fallback to ip4 also if getaddrinfo fails for ip6.
3951	- instead of EAI_ADDRFAMILY uses EAI_FAMILY which is portable
3952	  to FreeBSD.
3953	- signed/unsigned warning fix for FD_SETSIZE comparison.
3954	- Lots of debug statements and new quit sync feature, where
3955	  the server children are synced with. So as not to lose buffers.
3956
395728 November 2006: Wouter
3958	- Debugging 10k zones transfer, set so that zones waiting for a
3959	  socket do not get timeouts.
3960	- Debug change so that an event is only returned to one handler
3961	  by netio.
3962	  Reversed this. Netio will not deliver events you do not listen
3963	  to, and since xfrd first listens to write then read, it will
3964	  not have problems with stale events (for the fd from the previous
3965	  select) because these are always read, while it needs a write.
3966	  Re-Reversed it: netio will deliver events only once.
3967	  This is easier to understand for the poor hapless developer.
3968	- Need to set notify_current for notify on waiting list. Fixed.
3969
397027 November 2006: Wouter
3971	- Debugging 10k zones transfer, noticed that it is possible for
3972	  netio to give a callback for an event that you were not listening
3973	  to. Now no longer does that.
3974
397516 November 2006: Wouter
3976	- Bug #153: now checks for FD_SETSIZE when adding fd to select fdset.
3977	- Easy overview of socket allocation for xfrd in xfrd.h
3978	- Upped the default xfrd socket limits a bit.
3979	- Log message that the TCP connection limit is reach is now only
3980	  in -L 2 logging. It is spammy.
3981	- updated dependencies.
3982	- Added test for notify-socketcount, and removed unused files from
3983	  bug153 test package.
3984	- Notify udp sockets are also capped at a max number. The rest
3985	  has to wait in a queue.
3986
398715 November 2006: Wouter
3988	- Fixed bug #152: identity keyword in nsd.conf did not work.
3989	  What happened was that the hostname() from the computer
3990	  was overriding the nsd.conf identity. Fixed now.
3991	  If commandline is given that is used.
3992	  Else nsd.conf entry is used.
3993	  Else hostname() detected from computer is used.
3994	  Else default string "unidentified" is used.
3995
399614 November 2006: Wouter
3997	- Fixed bug where NSD tries to create 10000 udp sockets,
3998	  when starting with 10000 secondary zones. Limited to 50
3999	  at a time. The XFRD_MAX_UDP constant controls this.
4000
40013 November 2006: Wouter
4002	- Created tags/NSD_3_0_2_REL.
4003
40042 November 2006: Wouter
4005	- Added pdf for differences.tex for ease of use.
4006	- Updated text in readme on memory usage.
4007
400824 October 2006: Wouter
4009	- Recycle rrset memory after doing special processing on the deleted
4010	  rrset data.
4011	- log message clearer for 'duplicate xfr part' to 'discarding partial
4012	  xfr part'.
4013	- if you have a server that has IXFR turned off but sends a TC flag
4014	  for IXFR queries, xfrd will retry to TCP. This makes the use of
4015	  'AXFR' flag in nsd.conf file not needed in certain cases.
4016	- Be thrifty and save up the memory that was lost at end of chunks
4017	  in the recycle bin. Saved 1.3Mb on 170(rrs)/220(total) Mb dataset.
4018
401923 October 2006: Wouter
4020	- Added checks for out of memory in reload (diff file). And it exits
4021	  if so neatly.
4022
402313 October 2006: Wouter
4024	- Bug #149: Wrong text for NOTAUTH error code. When notify is not
4025	  authorised REFUSED error code returned instead.
4026
40274 October 2006: Wouter
4028	- More fixes from Koh-ichi Ito (kohi@iri.co.jp now), for bug #146,
4029	  his bash does not do $(( )), so nsdc.sh has to use test of course.
4030
403129 September 2006: Wouter
4032	- recyclebin works, added a test that uses it (about 3 Mb goes
4033	  through the recyclebin). This resolves bug #147.
4034	- Made -L 1 logging is little less verbose (-L 2 gets it all).
4035	- added search path for openssl on Solaris 10 (/usr/sfw).
4036
403728 September 2006: Wouter
4038	- Removed unused global variable current_region,
4039	  and routines for it in region-allocator.c and .h.
4040	- Added recycle option to regions. It will keep track of small
4041	  objects in a recycle bin. Large objects are deallocated.
4042	  No calls to recycle yet, unit test it first.
4043	- added unit test for region recycle.
4044
404527 September 2006: Wouter
4046	- Further suggestion from Koh-ichi Ito, I've set opt->xfrdfile
4047	  to XFRDFILE in options_create. So opt->xfrdfile and opt->difffile
4048	  are never NULL. This simplifies code elsewhere.
4049	  And also handles chroot case (+=l) for default values.
4050	- Fix for bug #145. The skip file position in the diff file was used
4051	  inconsistently - one part of the code skipped to before the 'IXFR'
4052	  type code and another part skipped to after that. Now all skip to
4053	  before the type code. This bug only happens if your diff file
4054	  is like: zone1_part1, zone2_part_1, zone1_part2, zone1_commit,
4055	    zone2_part2, zone2_commit. The skip over zone1_part1 failed.
4056	- tpkg test in long dir that tests for the bugfix. Takes a long time
4057	  and uses ldns-testns feature to wait partway through an AXFR.
4058	- removed debug log of strerror on diff read failure, when the errno
4059	  was already output to the logfile (resulting in a nonsense error).
4060
406126 September 2006: Wouter
4062	- NSD compiles on Solaris 10 with the sun cc compiler.
4063	  Added a define for _STDC_C99 for that.
4064	- Checked that the patch for solaris for bug 143 indeed fixes the bug.
4065	- Fixed bug #146 reported by Koh-ichi Ito: when chrooted nsd failed
4066	  to write xfrdfile/difffile.
4067
406818 September 2006: Wouter
4069	- no queries for NSEC3, RRSIG, ANY succeed for nsec3 only domains.
4070
407115 September 2006: Wouter
4072	- Fixed LOC parsing of integer overflow causing maximum values.
4073	  Added to test and backported fix to 2.3.6.
4074	- NSEC3 qtype queries get noerror/nodata or nxdomain answers.
4075	  You can query for NSEC3PARAM.
4076	- warnings for printf format on maxOS (sizet needs cast to int).
4077
407813 September 2006: Wouter
4079	- added fsync to AF_UNIX sockets to write last command (QUIT) before
4080	  closing them.
4081	- sent explicit QUIT command to xfrd on final shutdown of the server.
4082
408312 September 2006: Wouter
4084	- Bug #144: LOC defaults for unspecified values wrong. Error in zonec.
4085	  Set defaults. Also fixed parser if LOC has no minutes or seconds.
4086	- Also fixed rounding error in seconds 0.001 decimal.
4087	- Test tpkg for bug 144.
4088
408911 September 2006: Wouter
4090	- nsdc now more portable in use of 'which'.
4091	  Does not only look at exit code but also checks for '^no ' string.
4092	- nsd-patch does a chdir to zonesdir for relative difffile or dbfile
4093	  path names.
4094	- nsdc handles zonesdir: for relative pidfile, dbfile, difffile
4095	  pathnames.
4096
40977 September 2006: Wouter
4098	- bumped version to 3.0.2.
4099	- Nice configuration error when you had the wrong zone name in the
4100	  nsd.conf file. Zonec will give an error already.
4101	- When you start a secondary zone without a zone file, you get
4102	  a much nicer error message, warning you of the zone transfer.
4103	- Credits for prerelease testers; Thanks guys!
4104
41056 September 2006: Wouter
4106	- Fixed nsd-patch so that it writes the SOA at the start of the file.
4107	- test tpkg that tests for the bug, has multiple rrsets at zone apex
4108	  and does nsd-patch followed by zonec.
4109	  Previous tests did not catch this: they used nsd-xfer to test zone
4110	  contents, or only checked the zone-file after nsd-patch.
4111	- version number bumped to 3.0.1.
4112	- svn tag 3_0_1 made.
4113
41145 September 2006: Wouter
4115	- differences file improvements.
4116	- created 3.0.0 release in svn tags.
4117
41184 September 2006: Wouter
4119	- From suggestions by Bin Zhang:
4120		- nsdc restart does not fail if nsd was not running.
4121		- fixes to man pages, wrong locations for files.
4122	- NSEC3-PARAM has no optout bit in presentation format.
4123	- NSEC3PARAM spelling.
4124	- differences in latex format (needs nlnetlabs housestyle).
4125
412631 August 2006: Wouter
4127	- Fix for tsig size still set when data is null ptr.
4128	- Fix configure for NetBSD (1.6 - 2.0) to find struct timespec.
4129	- DIFFERENCES file completion.
4130
413130 August 2006: Wouter
4132	- Print error nicely when nonblocking connect fails on systems
4133	  in a portable way.
4134	- doc/UPGRADING document to assist NSD 2 to 3 upgrades.
4135	- updates of error print - ignore EINPROGRESS if we check too early.
4136	- wait for select writable before testing for connect error.
4137	- echo "" >&2 is not as portable as we would like, removed from nsdc.
4138	- fixed debug print of a null ptr.
4139	- fixed bug where query for CNAME that points to unserved zone caused
4140	  nullptr exception on empty zone ptr. Now original zone is restored
4141	  after CNAME-pointed data is added to the packet.
4142	  Test in dname.tpkg. Reported by Kai.
4143	- fixed stack corruption when ipv6 disabled.
4144
414529 August 2006: Wouter
4146	- NSEC3 made it so it can handle the case where the NSEC3 RRSET
4147	  with the SOA bit on does not have the RR with the soa bit set
4148	  as the first RR.
4149	- Handle NSEC3-PARAM type. Checks to see if any of them work:
4150	  zone apex hashed exists, with NSEC3 type, and RR that has
4151	  the same parameters and the SOA bit set.
4152	- in presentation format of NSEC3, NSEC3-PARAM reversed hash, optout.
4153	- update to the DIFFERENCES file, bind 9.3.2 vs NSD 3 and
4154	  NSD 2 and 3 comparisons are completed.
4155
415628 August 2006: Wouter
4157	- echo messages in nsdc made clearer. nsdc notify and nsdc update
4158	  only send notify messages to slaves / localhost to force transfers.
4159	- initial NSEC3-PARAM type code entry. parsed, ignored.
4160
416125 August 2006: Wouter
4162	- disabled make test target as tests are not shipped.
4163	- performed prerelease static snapshot.
4164	- updates to the DIFFERENCES document.
4165
416624 August 2006: Wouter
4167	- Fix bug 141 port from 2.3.6, copies behaviour from bind 9.3.2.
4168	- Added a test for bug 141.
4169	- Bug141: save the opcode from the query.
4170
417123 August 2006: Wouter
4172	- Fixed % by 0 exception in the bugfix #139.
4173	- Fixed RFC 4035 says CD flag SHOULD be cleared on authoritative
4174	  responses, now NSD clears the CD flag. This is bug #140.
4175	  RFC 4035 could be confusing on this, as it states 'all servers
4176	  MUST copy the CD bit' more than once, but then makes clear only
4177	  recursive servers are meant with that statement.
4178	- Differences document updates for bind 9.3.2 and nsd 3.
4179
418022 August 2006: Wouter
4181	- version number to 3.0.0 in preparation for release.
4182	- Bug #139: resync stats to whole period. Fixed.
4183
418421 August 2006: Wouter
4185	- check for error in ftruncate call.
4186	- replaced fwrite call with write_data call from util that does
4187	  error checking.
4188
418915 August 2006: Wouter
4190	- removed unused struct nsd.named8_stats variable.
4191	- Bug #138: nsd aborts trying to bind all interfaces if ip6 is not
4192	  enabled, instead it will fallback to ip4.
4193
419414 August 2006: Wouter
4195	- Added test for rollback of an IXFR transfer by xfrd.
4196	- Added test for reload timeout in xfrd, the reload does happen after
4197	  a while, but not immediately.
4198	- Test that makes xfrd connect to ip6 address.
4199	- Test that overloads the number of tcp connections in xfrd,
4200	  simulating a slow master, so that zones have to queue up to get it.
4201	- code coverage is now 2514 of 10636 uncovered. Still a lot uncovered.
4202	- ixfr queries return NOT_IMPL errors.
4203
420411 August 2006: Wouter
4205	- srandom to init random() in xfrd based on PID and time.
4206	- improved usage() information to be more helpful, and with version.
4207	- in makedist.sh, flex and bison called like in Makefile.
4208	- test for tcp underrun and overrun of the buffer.
4209
421010 August 2006: Wouter
4211	- added more tests to increase code coverage of testset.
4212	- moved acl parsing code from configparser.c to options.c to help
4213	  unit testing.
4214	- nsd-checkconf echod wrong difffile filename with -v.
4215	- nsd-patch can now be used with -f to force printing of all RRs.
4216	- TYPE_NULL crashed NSD when it printed it, arg was ZF_DNAME,
4217	  now ZF_UNKNOWN.
4218	- unknown rr test was faulty on input, the length was in nibbles
4219	  not in octets, but rfc specifies octets for unknown rrs.
4220	  NSD does not look at the length, and prints the length correctly.
4221	- added type NXT to the rr-test for weird RRs.
4222	- added printing test to rr-test, ipseckey and unknown-rr tests.
4223	  checks if NSD prints the same RR on output as it read in.
4224	- put -x option for nsd-patch in usage().
4225	- test that kills an nsd child server and checks that it is
4226	  restarted.
4227
42289 August 2006: Wouter
4229	- tested nsdc functionality, make install and make uninstall.
4230	- set O_NONBLOCKING on xfrd tcp sockets before the connect call,
4231	  because the handshaking can take very long too.
4232	- difffile and xfrdfile set via configure, to absolute pathnames,
4233	  so that chroot checks work for them.
4234	- updated tpkgs, they need to set relative paths now for difffile.
4235	- gcov says 2821 of 10617 total code lines are not covered.
4236	  compiled with --coverage, not -O2, ran tpkg/* and long/testplan*.
4237	  counted grep '#####:' *.gcov | wc and grep '^ *[0-9]*:' *.gcov | wc.
4238	- cleaned up the log functions, NSD no longer spams the syslog with
4239	  debug messages. The standard NSD debug util is used, -F -1 -L 2 for
4240	  a compile configured with --enable-checking will enable them again.
4241	  Errors are logged, as is the automated reload of a new serial.
4242	- tpkgs for bug077 and bug107 were silently failing to test properly.
4243
42448 August 2006: Wouter
4245	- fixes for checkconf test, more portable.
4246	- removed items from TODO that have been tested.
4247	  for multihomed servers you have to bind to each interface
4248	  explicitly to get outgoing ip-address the same as query
4249	  destination ip-address.
4250	  Forks and if-existing are tested and ok in testplan tests.
4251	  close_all_sockets is called by child, if tcponly, so leave it.
4252	- user name check is hard portably with shell scripts, and
4253	  packaging could set a default user that does not exist on a machine.
4254	- empty nodes (nonterminals) give no nxdomain any more (todo item done).
4255	- removed (old) from TODO.
4256	- removed contrib/buildzones.pl, it is outdated.
4257
42587 August 2006: Wouter
4259	- Made the tests a little more portable.
4260	- fixed mempcy unable to handle unaligned memory addresses on Solaris,
4261	  used memmove instead of memcpy in zonec LOC conversion code.
4262	- another unaligned memory access, when storing off_t pointer in
4263	  difffile.c, used memmove.
4264
42654 August 2006: Wouter
4266	- nsd will start if diff file is corrupt, with a log message.
4267	  It ignores the bad data.
4268	- tpkg files do not override PATH, svnhook sets it. So user can
4269	  set path to utilities on the system to run the tests.
4270	- running testset on DecAlpha discovered uninitialised variable
4271	  in NSD. Fixed.
4272	- Jakob Schlyter asked for building nsd3 in an obj dir, i.e.
4273	  mkdir obj; cd obj; ../configure && make. Fixed up makefile for that.
4274	- and bug137.tpkg for separate obj dir building.
4275
42763 August 2006: Wouter
4277	- more tests in mesh test.
4278	- changed test packages to put nsd log to test result "/dev/stdout".
4279	- test packages more portable - use default 'dig' location.
4280	  also, path is appended to, instead of replaced.
4281
42822 August 2006: Wouter
4283	- Region can be customised for detailed memory handling.
4284	  Especially if you set large_object_size=0, chunk_size=0,
4285	  the region will perform individual allocs, and 'save memory'.
4286	  The region still keeps tracks of allocations so that at
4287	  region_free time all memory is released.
4288	- tsig.region removed, it was not used after attaching a cleanup
4289	  at creation. tsig creation uses custom region settings.
4290	- xfrd inits the tsig records with memory saving settings,
4291	  so the regions alloced for tsig take up about 60 + 4*8 bytes.
4292	- new custom region for query region - to make chunksize larger
4293	  there. The chunksize for the query region is important, if
4294	  all allocations for a query fit in it, no mallocs are needed.
4295	- TSIG other_data field size according to RFC 2845 is 0 or 6.
4296	  In tsig implementation put a maximum to the field of 16,
4297	  otherwise a formerror results.
4298	- query with IXFR appended SOA not formerror.
4299	  IXFR queries not reach the handler in axfr.c for IXFR queries.
4300	- removed annoying debug message of added tsig key.
4301	- added test that starts 7 servers in a mesh and lets them fight out
4302	  what zones to transfer and serve.
4303	- xfrd logic bug: if notified a slave would not see the renewal
4304	  of its current zone.
4305
43061 August 2006: Wouter
4307	- Test for remove domains with IXFR.
4308	- Fix for empty nonterminals and IXFR deletes.
4309	- Test for timeouts, including expiry, and expiry and zone updates.
4310	- Test for axfr refused authorisation.
4311	- Test for deadlock in ipc.
4312
431331 July 2006: Wouter
4314	- Test plan ixfr test in tpkg/long directory.
4315	- IXFR with many packets tested (one RR per packet).
4316
431728 July 2006: Wouter
4318	- tentative change, that preserves ordering of rrtypes for a domain.
4319	- fix for serial rollover (old_serial + 2**31), now works, is seen
4320	  as new serial and rolled over to new.
4321	- serial numbers, and time values, printed as unsigned to logfile.
4322	- set so that if info is provided by operator, refreshing state
4323	  not expired is used.
4324	- forgot to * a pointer to boolean, is_ixfr in the difffile reader.
4325	  This fixes the testplan_ixfr test 1.
4326
432727 July 2006: Wouter
4328	- fixup desc of tsig xfer test, remove debug from xfr_huge.
4329	- fixed compressed dname tables cleanup, to set ptr to NULL.
4330	- initialised xfrd_listener.fd to -1.
4331	- fixed difffile handling of very short AXFRs, with no data.
4332
433326 July 2006: Wouter
4334	- Updated the requirements with comments from Olaf.
4335	- README discourages use of experimental nsec3 rr a bit more.
4336	- typo in DNAME code, used original qname instead of CNAME
4337	  adapted qname variable.
4338	- added IPSECKEY RR type, RFC 4025.
4339	- tpkg test with sample ipseckey rrs.
4340	- wireformat for IPSECKEY depends on the value of a rdata atom, added
4341	  WF_IPSECGATEWAY to handle that.
4342	- DHCID type, data is encoded in one binary/b64 blob.
4343
434425 July 2006: Wouter
4345	- max number of tries for nsd-notify is 15, so that the
4346	  total time for sending is about 75 seconds.
4347	- forward port of fixes for bug 105 and 135 in nsdc.
4348	  forward port of test for bug 105.
4349	- fixed nasty bug with configure --prefix=<...> where config.h
4350	  was wrong. Now double evaluate the shell expansion on the defines.
4351
43525 July 2006: Wouter
4353	- helped in README with gnu make; need to make clean
4354	  so that botched attempts by make to create the lexer files
4355	  do not stay around.
4356	- removed %zd, replaced by casts to int.
4357	- updated REQUIREMENTS file, the sections on RR types, on what
4358	  algorithm NSD follows and on which RFCs are supported are updated.
4359
43603 July 2006: Wouter
4361	- 'make depend' target in makefile. (updates both Makefile.in
4362	  and Makefile, so it works for users and for svn).
4363	- doc minor update.
4364
43652 July 2006: Wouter
4366	- TESTPLAN, README, bugzilla-bugs docs updated.
4367	- NSD for BIND users update.
4368
436929 June 2006: Wouter
4370	- removed --zonesfile nsd.zones configure option.
4371	- doc/README updated for 3.0.
4372	- doc update. NSD_FOR_BIND_USERS document.
4373	- moved from -Ds to the config.h header, cleaner compilation output.
4374	- use autoconfs built in large file support enabler.
4375
437628 June 2006: Wouter
4377	- nsdc neater, checks for BLOCKED ips more strictly.
4378	- nsd -d also disables xfrd forking, and thus all reloads
4379	  and secondary zone treatment. Stated so in manual page.
4380	- fixup, apart from ip4 need to allow ip6 in example.conf
4381	  line showing how to allow access for everyone to axfr.
4382
438327 June 2006: Wouter
4384	- Fixed read in server.c to be a blocking read for sure,
4385	  even if ipc is not blocking on the OS.
4386	- nsd-notify tries to send notify 5 times, then exits with error.
4387	- nsd-checkconf can lookup key secrets by name from a config file.
4388	- difffile option is always set in options struct with default
4389	  or config value.
4390	- nsd-patch uses dnames to compare zone names (for trailing .).
4391	- nsdc updated to work with config file.
4392
439326 June 2006: Wouter
4394	- Nicer check in autoconf for struct timespec type.
4395	- NSEC3 next hashed ownername is a length byte followed by data.
4396	- nsd-checkconf more quiet, clearer error message.
4397	- NSEC3 does not complain about glue records without nsec3.
4398	- nsdc work (did start, stop, running, rebuild, restart, reload, stats).
4399
440021 June 2006: Wouter
4401	- nsid commandline parsed using hex_pton routine.
4402	- unit test for hex_pton.
4403	- added include stdlib, needed for free() on sunos4.
4404	- fixup of disable-ipv6 compilation.
4405	- memmove compat implementation (created fresh).
4406	- yy_set_bol() for old flex compat define.
4407	- compat implementation from openssh4.3p2 for
4408	  strlcpy, inet_aton, and inet_ntop routines.
4409	- changed ctime_r usage to ctime() call, nsd is not threaded.
4410	- compiles on SunOS4/gcc-2.95.
4411	- debug statements go to the log_msg route instead of the
4412	  fprintf route, so they will get to a nice logfile even if
4413	  we forked away, with xfrd. logfile=/dev/stderr gives old way.
4414	- minor changes to cutest to make unit test compile
4415	  on SunOS4/gcc-2.95, it checks out fine there.
4416
441720 June 2006: Wouter
4418	- updated configure to disable -O2 on platforms where gcc
4419	  does not like it (such as dec-alpha).
4420	- nsd-notify used recvfrom and passed addrinfo.ai_addrlen
4421	  which is a size_t, but recfrom needs a socklen_t*. On dec
4422	  alpha these types differ in size (size_t is 64bit,
4423	  socklen_t is 32bit). Therefore, used a wrapper variable
4424	  to pass to recvfrom.
4425	- changed long int to time_t in nsd-patch.c to please compiler
4426	  on dec alpha.
4427	- dec alpha complains if statements are in front of variable
4428	  definitions. Fixed code for some mixups on this.
4429	- Fixup cutest for dec alpha. Code, lowercase filename, %lf->%f.
4430	- cutest fixup uses (size_t) cast and %zx to print ptrs (for debug).
4431	- for SunOS4 configure detects ssize_t and struct timespec.
4432	- removed usage of fpos_t, instead using fseeko/ftello for 64bit.
4433	- configure will define fseeko/ftello with fseek/ftell if unavailable.
4434	- added missing include from buffer.c (stdlib for free()).
4435	- defines for snprintf and vsnprintf in config.h if needed.
4436	- configlexer flex is called more cleanly with -t to write stdout.
4437	- missing include from configparser, stdlib for atoi.
4438	- config.h provide inet_pton define if it is not available.
4439	- fixup of INET6 defines, where sockaddr_storage is used
4440	  outside of INET6 defines, in xfrd-tcp.
4441	- edns_init_nsid was not defined in edns.h.
4442	- added compat/fake-rfc2553.c and h from openssh 4.3p2. That has
4443	  a BSD license as well. They replace getaddrinfo() (and friends)
4444	  when those are missing.
4445
444619 June 2006: Wouter
4447	- updated the tpkg/manual tests for NSD 3 config files.
4448	  Some need root privileges to run (using hping), they all pass.
4449	- also the tpkg/long test bug_sighup.
4450	- nsec3 code will warn at prehash time for missing exact nsec3
4451	  records. So faulty signed zones are more easily spotted.
4452	- fixed NSEC3 and CNAME/DNAME chains, it will disprove the new qname.
4453	- removed for() look in CNAME processing, only first CNAME is
4454	  processed now.
4455	- zonec will error on a zone with multiple CNAMEs for one name.
4456
445716 June 2006: Wouter
4458	- Swapped read and write ops in xfrd_handle_ipc, so that a read
4459	  of a signal from main can stop further writes.
4460	- xfrd will complete its last message before shutting down
4461	  the ipc writes and then acknowledge the reload-sync.
4462	  This resolves the race where half of ipc messages caused bad
4463	  modes from the main.
4464
446515 June 2006: Wouter
4466	- In preparation of notify send overhaul, moved the notify
4467	  send code to xfrd-notify.c and h files.
4468	- created cleaner split of notify send and xfr code.
4469	  Still in the xfr process, because it is a convenient location.
4470	- fixed bug where notify sending would read from wrong fd.
4471	- send master zone notifies.
4472	  Does not skips master zone SOA INFO updates.
4473	- fixed bug where port number acls did not match.
4474	- fixed bug where tsig keys are checked for twice, but not error_code.
4475	- fixed notify send retry counting.
4476	- added test tpkg for notifies from nsd master to nsd slave.
4477	- nsd-checkconf flags if you set allow-notify without request-xfr.
4478
447914 June 2006: Wouter
4480	- fixed crash bug when dnssec/NSEC enabled and query DNAME
4481	  target did not exist.
4482
448313 June 2006: Wouter
4484	- created doc subdirectory for documentation.
4485	- removed unused DIFF FILE MAGIC string.
4486
448712 June 2006: Wouter
4488	- dname_test tpkg with very extensive DNAME testing.
4489	- moved sizes of zone_name buffers to 3072 - for escaped names.
4490	- nsd-patch has a debug option to list the contents of the
4491	  difffile/ixfr.db/transfer patch log in a journal fashion. You can
4492	  then manually inspect the contents.
4493
44949 June 2006: Wouter
4495	- after a reload NSD will report the memory churn: number of bytes
4496	  of memory wasted by the zone transfer code.
4497
44988 June 2006: Wouter
4499	- When zone is re-chosen after a CNAME/DNAME no SERVFAIL is set,
4500	  noerror is returned instead.
4501	- zonec will error on multiple DNAMEs for the same name.
4502	- zonec will error on DNAME and CNAME together.
4503	- improved loop log message.
4504
45057 June 2006: Wouter
4506	- after DNAME the closest_match is set correctly for another DNAME.
4507	- in case of a loop returns gracefully instead of crash.
4508	- nsec3 checks if it is enabled for the zone for wildcards.
4509	- NSD will give referrals for zone cuts encountered after a CNAME
4510	  or a DNAME. This also fixed various subtle stuff with CNAME/DNAME
4511	  and TYPE_DS at zone cuts. It basically re-determines the zone
4512	  to use after the CNAME/DNAME.
4513
45146 June 2066: Wouter
4515	- zonec checks for data below a DNAME, and will not create the db,
4516	  as per rfc 2672. Tpkg test to make sure such a zone is not loaded.
4517	- updated rr-test tpkg so it has no data below a DNAME.
4518	- DNAME synthesis of CNAME records, including compression for cname.
4519	- included cname creation in dname test.
4520	- preallocate the extra temporary domain_type structures.
4521	- too many temp domains returns OK packet so that the resolver
4522	  will recurse and ask us again with the last name in the chain.
4523	- fixed bug introduced in preallocation on temp domain numbering.
4524
45252 June 2006: Wouter
4526	- dname_replace function that does DNAME replace and unit tests.
4527	- added error codes from DNSUPD rfc2136 to constants in dns.h.
4528	- in query.c added DNAME following code.
4529	- fixed bug 134: hints[i] in nsd.c to hints[0].
4530	- added tpkg small test for DNAME.
4531	- tpkg to test bug 134 (starts 100 processes).
4532
45331 June 2006: Wouter
4534	- tsig test with NSD master and NSD slave server. Tsig AXFR transfer.
4535	  nsd-xfer used to test slave zone contents.
4536	- fixed bug where buffer_flip() is done before appending tsig rr.
4537	- version printed at start of nsd in logfile.
4538	- xfrd prints name of tsig key used during transfer in commit comments
4539	  so it appears in the log file and in zonefile after nsd-patch.
4540	- prints RRs from diff file only if debug level >= 1.
4541	- scalable transfer test xfr_gig added, you can set the size to try
4542	  in the .pre file. Now set very small.
4543
454431 May 2006: Wouter
4545	- xfrd check for failed updates. It compares the time it wrote the
4546	  commit to disk with the time of the last reload command.
4547	  Failed updates are restarted like the zone is notified of the soa.
4548	  It also catches reloads that have been lost (reload cmd while reload
4549	  is running, or a crashed reload process, for example).
4550	- when reload is issued, times at that second are put back one second,
4551	  so that after a reload all the zones that should have been loaded
4552	  have a time from before the reload.
4553	- if a reload crashes, NSD will continue with the old database,
4554	  xfrd is not informed, since it cannot fix that.
4555	- nsd-checkconf strdups arg strings before writing to it.
4556	- tsig error replies contain error data, but no signature.
4557	  also crashproof, badly formatted tsigs get a format error.
4558	- tsig error print knows about DNS rcodes in tsig error field.
4559	- added tpkg tests for tsig.
4560	- tpkg test for nsd-xfer with TSIG from nsd.
4561	- small stuff with makedist.sh, CREDITS, Features, make test.
4562
456330 May 2006: Wouter
4564	- tsig pre-allocs the rr_region, not at runtime, tsig_create_record().
4565	- redid some region work for tsig. Now has another temporary region
4566	  for the context data. User is only aware of the region passed at
4567	  start that exists for the lifetime of the struct.
4568	  During TSIG checks no more mallocs are done, only region_free_all
4569	  and region allocs (of small size).
4570	- checkconf, port is stored as a string.
4571	- tsig now keeps a max_digest_size for giving reserved space.
4572	- AXFR does tsig every 96 packets (and first and last packet).
4573	- tsig signing works for all queries. SOA queries, ...
4574	  If you configured the key in the config file, you can use
4575	  that key for any query for any zone.
4576	  Except for NOTIFY and AXFR queries; those are only allowed for
4577	  the zone (and source ip address) which are configured in the config.
4578	- cleaner compile with tsig disabled.
4579	- fixed unknown key error reply in tsig.
4580
458129 May 2006: Wouter
4582	- The nonblocking write routines disable silently if they have
4583	  nothing to do.
4584	- put xfrd read/write state routines (almost 500 lines of code)
4585	  into xfrd-disk.c file.
4586	- little readme blurb on xfrd state file for the operator.
4587	- put ipc code in its own file for ease of reading.
4588	- removed --disable-axfr, you can control this via acls.
4589	  With no provide-xfr: statements, a zone will not do axfr.
4590
459125 May 2006: Wouter
4592	- fixed reload sending; it checks for EAGAIN and EINTR.
4593	- reload sends parent quit command blocking to make sure of arrival.
4594	- send_children_quit in parent uses nonblocking writes and closes
4595	  the pipe to signal the child to quit (even if the write does not
4596	  come through, the closed pipe will cause the child to quit).
4597	- need_to_send_STATS flag in parent.
4598	- reload has its own ipc-listening handler in server_main.
4599	- nonblocking writes for server_main; this solved write-blocking race.
4600	- another race condition solved, if a process dies, half a read or
4601	  write buffer could be left behind on another process. These are
4602	  dropped. Now:
4603	  	* The server_main drops ipc from dead children.
4604		* The server_main drops ipc if xfrd dies.
4605		* The server_main drops xfrd(old) and all children ipc
4606			on reload.
4607		* The xfrd drops ipc to parent on a SOA_BEGIN from reload.
4608		  So after reload, but parent and xfrd start with
4609		  clean ipc buffers.
4610
461124 May 2006: Wouter
4612	- unit tests print progress while running to stderr. Included license
4613	  of cutest with its source in svn repository.
4614	- stack type (for the IPC buffer of zone update dirty). And unit test.
4615	- only update zone-is_ok if needed to reduce memory copy on write.
4616	- split off conn_write() from xfrd tcp nonblocking write routines.
4617	- nonblocking writes for xfrd.
4618
461922 May 2006: Wouter
4620	- ported over minor nits from 2.3.5 NSD fixups. Cast to (void)
4621	  unused function return values.
4622	- removed kill signal to children, superfluous due to quit cmd ipc.
4623	- moved is_ok for zones to the zone_type in namedb, not in
4624	  the options, it is a runtime value not a config value.
4625	  For zones that have no data, parent and children keep no state.
4626
462712 May 2006: Wouter
4628	- fixed up usage print for zonec to include -f option.
4629	- xfrd send notifies.
4630	- server no longer sends SOA INFO for master zones.
4631	- removed possible debug log print of a null string.
4632
463311 May 2006: Wouter
4634	- nsd.conf.sample shows defaults for ip4-only, ip6-only and debug-mode.
4635	- SOA_BEGIN message on start of reload sending soa info so that
4636	  xfrd will not reply with expire-notifications and thus deadlock
4637	  both on blocking writes (and no OS buffer on the pipes).
4638
463910 May 2006: Wouter
4640	- nsdc.sh is set +x after creation.
4641	- improved error message when zone in db has no config info.
4642	- support for broken nsec3 chains (if the one with the SOA bit
4643	  is complete, it is OK for there to be other nsec3 chains
4644	  with different parameters in the zone).
4645
46469 May 2006: Wouter
4647	- Fix for finding bad zone when populating SOA info on start.
4648	 it would find a parent zone instead of the zone in question (
4649	 which is empty).
4650	- request-xfr: AXFR 10.0.0.153 keytouse syntax to interoperate
4651	  with NSD machines. Will only send AXFR queries to the machine.
4652	- documented AXFR option in nsd.conf.5 manual page,
4653	  and updated nsd-checkconf, nsd.conf.sample.
4654	- made 'skipping zone' log entry clearer (Sam Weiler asked).
4655
46568 May 2006: Wouter
4657	- updated zparser.y to handle empty nsec_seq lists.
4658	  for empty nonterminals in NSEC3.
4659	- nicer without ambiguous grammar.
4660
46615 May 2006: Wouter
4662	- nsd-notify handles option -y key:secret to TSIG sign outgoing
4663	  queries.
4664	- the acl checks now verify TSIG signatures on the query.
4665	- iterated_hash compiles with ssl disabled.
4666	- new ipc NSD_ZONE_STATE sent by xfrd to nsd process. notifies
4667	  nsd of the state (ok or expired) of a zone.
4668	- reload process waits for the old server_main to exit to make
4669	  sure there is no race condition listening to the NSD_ZONE_STATE
4670	  messages generated when reload sends SOA_INFO to xfrd.
4671	- server_main and children all set zone_ok state in config options.
4672	  also server_main so that newly forked children get the right state.
4673	- if a secondary zone is expired, NSD returns SERVFAIL.
4674	  a transient error, so resolvers try again later.
4675	- SOA_END ipc message, sent by reload to xfrd, so it can repeat
4676	  all zone states (which can have changed during reload).
4677	- zone_is_ok kept in config section so that state for zones
4678	  without data is not lost. Those have no zone_type*.
4679	- secondary zones start in the expired state.
4680	- if expired zones are updated, then NSD gets the go ahead from
4681	  xfrd after reload sends SOAINFO/SOAEND msg, so it is really
4682	  updated in nsd memory.
4683	- fixed tpkg xfr_1 to have longer expiry times (from 0 and 3
4684	  seconds to 2000 and 3000 seconds), so the zone does not expire
4685	  during the test anymore.
4686
46874 May 2006: Wouter
4688	- when a new lease is acquired xfrd_packet_newlease result is used.
4689	- if a zone is lost in nsd db, xfrd will update state to match.
4690	- IXFR can use TSIG in queries and verify responses.
4691	- Fixed memory leak in xfrd tsig handling.
4692
46933 May 2006: Wouter
4694	- forward of 2.3.4 RELNOTES into trunk.
4695	- debug log statements to track xfrd request rounds.
4696	- removed memleak from handle_passed_packet in xfrd.
4697	- faster find_zone in difffile.c.
4698	- nsd-patch writes commit log entries into zone file.
4699	- took some tsig.c enhancements from 3 branch,
4700	  -> if key or algo changes during connection, return bad_key,
4701	  -> debug statement neater.
4702	- nsd adds tsig keys to tsig keyring at startup.
4703
47042 May 2006: Wouter
4705	- ifdef inet6 back on ss_family usage in server.c.
4706	- nsd-checkconf ip6 ifdefs improved.
4707	- xfrd tries servers 3 rounds, then waits for next retry.
4708
47091 May 2006: Wouter
4710	- off_t used for 64bit fileio.
4711	- searches for smallest unused part and sets diff_skip to that.
4712	- doc comment near the region_free_all for every query about
4713	  malloc speed.
4714	- null ptr in strcmp does not work on bsd, fixed nsd-checkconf.
4715	- made nsd.conf.sample.in so the sample gets prefix-corrected.
4716	- removed nsd.zones.sample.
4717	- makedist.sh added manual pages for nsd-xfer nsd-patch.
4718	- install/uninstall nsd-patch, nsd-checkconf and manpage.
4719	  small update readme.
4720
472128 Apr 2006: Wouter
4722	- ixfr >64k in xfrd.
4723	- fixed length of new commit parts.
4724	- fixed multiple ipc reads in xfrd.
4725	- fixed multiple packet ixfr read in diff file.
4726   Miek:
4727	- Forward port fixes for nsd-xfer and nsd-notify
4728
472927 Apr 2006:
4730   Wouter:
4731	- nsec3 review fixes.
4732	- diff file format expanded for >64kb transfer support.
4733	- diff reader adjusted for >64kb.
4734   Jelte:
4735	- small non-null options check in nsd.c.
4736   Miek:
4737	- updated nsd-checkconf for zone parse shell script support.
4738
473925 Apr 2006: Wouter
4740	- Tests on NSEC3 code. Fixed that the unsecure delegations also
4741	  have _ds_ parent nsec3 prehashes, so that they get proper NSEC3s.
4742	  NSD will serve NSEC3s to prove 'opt-out' also if the opt-out bit
4743	  is (erroneously) not set.
4744	- For the 05pre2 draft section 5.4.8.1. QTYPE is NSEC3, only NSEC3
4745	  RRsets at name. Fixed that RRSIGs present do not matter.
4746	  And also the closest encloser proof in that case fixed.
4747	  If wildcard exists below zone apex servfails (cannot disprove
4748	  it and NSD cannot instantiate the wildcard at that point).
4749
475024 Apr 2006: Miek
4751   Miek:
4752	- forward port nsid (disabled by default)
4753   Wouter:
4754	- nsd-patch manual page.
4755	- minor MacOSX port fixes.
4756	- xfrd-reload-timeout: config option.
4757	- if you set the xfrd reload timeout to -1 it will not
4758	  automatically reload after a transfer. User can reload.
4759	- reload timeout is a wait period after the reload is triggered.
4760	- more verbose acl logging. Validated acls are logged in detail.
4761	  Invalid acls are only logged in debug mode, level >= 1.
4762	- log message when xfrd tcp connections max out.
4763	- if unknown NSEC3 hash type (not SHA-1), disable NSEC3.
4764	- xfrd randomizes the timeouts, within 10% of original,
4765	  to spread out activity. Short timeouts < 10 seconds are not
4766	  affected, and will give activity bursts (on startup for example).
4767
476821 Apr 2006: Wouter
4769	- put NSEC3 code in nsec3.c and nsec3.h.
4770	- iterated_hash only adds the salt if salt_len > 0.
4771	- added some assertions and cleanups to nsec3 code.
4772	- prehash also calcs the nsec3_last domain*.
4773	- dbaccess when reading in will set the rr_type.owner value.
4774	- changed namedb_find_zone to domain_find_zone, log msgs.
4775	- implemented logic from nsec draft 05-pre2 section 5.4.1 - 5.4.8.
4776	  NSEC3 responses only happen for nsd compiled with --enable-nsec3
4777	  and for zones where an NSEC3 with the SOA bit set exists.
4778	- added prehash pointer to ds parent side cover for opt out.
4779	- removed dynamic plugins. Dynamic plugin support is an explicit
4780	  non-requirement (under creeping featurism).
4781	- in domain table create root nsec3 ptrs are NULL.
4782
478320 Apr 2006: Wouter
4784	- Unittest of base 32 encoding.
4785	- unittest start for iterated hash.
4786	- fixed for ctrlc in debug mode.
4787	- delete zparser_conv_long, not used, not needed
4788	- nsd-xfer will display NSEC3 correctly. zonec parses.
4789	- improved usage() line from zonec, about -c none, must be -C.
4790	- base32 printed in lowercase (canonical format for DNS).
4791	- NSEC3 added prehash pointers to the namedb.
4792	- NSEC3 autodetects presence of NSEC3 in zone and parameters.
4793
479419 Apr 2006: Wouter
4795	- port fix base10 in zonec conv short from 2_2 branch to trunk.
4796	  and conv byte, algo, certificate, long.
4797	- configure option to enable NSEC3 (--enable-nsec3) support.
4798	- from Ben Laurie's NSEC3 patch, loaned the parse code,
4799	  base32 conversion code and iterated_hash.
4800	  With some small modifications. The type rrdescriptors are
4801	  indexed by value below SPF, and in
4802	  rdata_wireformat_to_rdata_atoms BINARYWITHLENGTH checks
4803	  for end of buffer. Also parser checks for '-' salt.
4804	  Some layout (spaces after ,s). And NSEC3 define is used.
4805	  strtol used for iterations is base 10.
4806	- moved rrtype descriptor table sanity check to unittest.
4807
480818 Apr 2006: Wouter
4809	- Fixed check for SOA IN, bad ntohs in the check.
4810	- minimum timeout also enforced for very low expire times.
4811	- report the actual used length of the sockaddr to sento
4812	  for FreeBSD.
4813
48147 Apr 2006: Wouter
4815	- modified the kill_nsd tpkg so that it waits up to 10x5 secs
4816	  for nsd to make the pid file, and it wait up to 10x5 secs for
4817	  nsd to exit after the kill signal is given.
4818	- xfrd checks on startup if there is trailing garbage in the
4819	  diff file, left there by a previous xfrd killed in action.
4820	  It then snips off any partial parts, so service can resume.
4821	  Also the difffile_skip pos is set before any partial record there.
4822	- first version of nsd-patch; reads db and ixfrs and updates zones.
4823	- moved print_rdata from nsd-xfer to rdata.h to share code.
4824	- moved print_rr from nsd-xfer to util.h to share code.
4825
48266 Apr 2006: Wouter
4827	- notify handler passes acl number that matches to xfrd.
4828	- xfrd keeps a next_master for a zone, and sets it after notify.
4829	  when notified nsd will try to contact the master that sent
4830	  the notify, if send from an address that is both in acl
4831	  allow-notify and request-xfr.
4832	- xfrd closes its tcp and udp sockets on exit.
4833	- default names for diff file and xfrd state nicer.
4834	- fixed up kill nsd grep on ps.
4835	- fixed up race conditions in test script for kill nsd
4836	  wait for pid file creation by nsd, and grep -v grep in check.
4837	- in nsd signal-flags inherited from the parent are zeroed
4838	  when a server_child starts. Also the server_child switches back
4839	  to NSD_RUN mode when a bad mode happens.
4840	- check if ixfrs start from the version in memory.
4841	- if IXFR/AXFR ends in a serial that is newer than the serial
4842	  that was sent in an notify, update the notified serial.
4843
48445 Apr 2006: Wouter
4845	- added lowerbound for retry timeout.
4846	- added extra assertions to xfrd-tcp.c, saying that the waiting line
4847	  for tcp connections must be empty if the counter is below max.
4848	- setup so that the first master tried is the first in acl list.
4849	- diff file skips OPT and TSIG RRs if they are put into the answer
4850	  section.
4851	- if IXFR contains an RR to delete that does not exist, nothing
4852	  happens.
4853	- update zone for NS, RRSIG also if multiple RRs in the rrset.
4854	- difffile: create zone struct also if domain exists already.
4855	- difffile: destroy temp region on error.
4856	- difffile: in delete_RR, create temp region outside of the routine,
4857	  so no alloc region, destroy region for every deleted RR.
4858	- difffile: for IXFR: do not delete final SOA RR.
4859	- difffile: unknown parts in file is an error.
4860	- difffile: EOF on last packet is ignored w/o giving an error.
4861
48624 Apr 2006: Wouter
4863	- Addes EACCES to the netio dispatch error bailout.
4864	- Removed EACCESS (probably due to log_msg), error on close
4865	  xfrd pipe is small, main process closes its end, and hopes for
4866	  the best).
4867	- review: return on error condition in xfrd_tcp_open fixed.
4868	- review: expired when time >= expire_time, so it will not wait
4869	  for the retry after expire until it will detect the expiredness.
4870	- removed duplicate lines from xfrd_handle_zone_timeout.
4871	- review: copy of uint32_t using memcpy to avoid unaligned memory
4872	  accesses.
4873	- review: fd=-1 removed from set_refresh_now; only does timer.
4874	- on a tcp timeout it will retry immediately (instead of waiting
4875	  another retry timeout). This means if you set refresh_now, it will
4876	  interrupt a tcp-timer for a fresh retry with the next master.
4877	- put null in buffer for xfrd read state.
4878	- log msg uses string that exists instead of overwritten buffer.
4879	- read entry sets refresh depending on current time,
4880	  and makes sure not to check soa contents if none provided.
4881	  added explanatory comments.
4882	- EACCES back in check.
4883	- server_main first checks for terminated children, then select().
4884	  So when select is interrupted, by kill or quitting children,
4885	  it will first see if it has to quit itself, before restarting
4886	  the children.
4887	- destroy tempregion xfrd read on error.
4888	- check for serial existence in xfrd_handle_incoming_soa.
4889	- handle_incoming_soa uses set_timer_refresh routine.
4890	  and can handle expire times < refresh times.
4891	- log msg for udp socket() error.
4892	- review: xfrd_parse_soa_info email parse uses correct buffer spot.
4893	- added a lowerbound to refresh interval (=1 second now).
4894	- upon receipt of a IXFR, if the serial is older than the notified
4895	  serial, the zone stays refreshing (but the ixfr is saved).
4896
48973 Apr 2006: Wouter
4898	- Added buffer length check to internal ipc.
4899	- split out packet_read_query_section from the process_query_section
4900	  routine (and moved to packet.c/h).
4901	- xfrd reads passed packet via ipc.
4902	- ported over fix to 2_2 on missing rr types by removing the
4903	  duplicate RRtype array, and using rrtype_to_string.
4904	- xfrd handles notifies. immediately starts updating.
4905	- xfrd state file format fix.
4906	- removed libwrap stuff - superseded by acls.
4907	  use provide-xfr: statements for your zone in the config file.
4908	  updated README for this.
4909	- updated tpkg tests for axfr to use provide-xfr: 127.0.0.1 NOKEY
4910	- review: move var create to start of function (xfrd_init()).
4911
491231 Mar 2006: Wouter
4913	- zone type has a pointer to zone options.
4914	- nsd options has an rbtree to find zone options in.
4915	- nsd checks acl for incoming notifies and replies
4916	  error or confirmation.
4917	- nicer layout in options.c.
4918	- updated makefile dependencies.
4919	- fixed sz for SOA_INFO ipc, which was too small.
4920	- notify is sent to server_main, server_main sends it to xfrd.
4921
492230 Mar 2006: Wouter
4923	- include: documented in manual page.
4924	- MAXINCLUDES define in one place (config.h).
4925	- configure checks for strptime in include files.
4926	- use %d instead of %zd (sparc5 machine does not get zd).
4927	- use region_strdup in configlexer.
4928	- added a check for EINVAL in dispatch - will abort
4929	  on the error instead of busy hang.
4930
493129 Mar 2006: Wouter
4932	- \r for config lexer. (similar changes to zonelexer).
4933	- forward port of fix to 2_2 branch:
4934	  short int in var_arg is promoted to int, according to B. Laurie.
4935	  The same logic for %o, %d %x would hold for %u I think.
4936	- in XFRD, soa prim_ns and email domain names are kept in a max
4937	  size buffer.
4938	- split up dname_parse into parse from string to wireformat
4939	  and parse from wireformat to memoryformat, so both can be called.
4940	- split up dname_make_from_packet into reading the wireformat
4941	  from the packet and the dname_make, so both can be called.
4942	- xfrd reads all soa info from incoming xfr packets.
4943	- xfrd will ignore TC bit on tcp channels.
4944	- nsd sends xfrd all soa info, including ttl and dnames.
4945	- config file now has an include: filename directive.
4946
494728 Mar 2006: Miek
4948	- forward port fixes for zone compiler and \r. svn:1926-1927
4949	- add DO bit MASK and remove the !! construct
4950
495117 Mar 2006: Wouter
4952	- according to axfr-clarify, added comments that we check
4953	  more leniently on further responses on a TCP stream.
4954
495516 Mar 2006: Wouter
4956	- Fixed up SOA INFO Send routines. Send from server works.
4957	- niced up xfrd state file.
4958	- Fixed up so that after a reload it will continue in diff file
4959	  where it left off.
4960	- made send of SOA info use write_socket, in case of short writes.
4961	- redesigned xfrd_tcp_read to use the same code for ipc read.
4962	- no free()s before xfrd exit.
4963	- xfrd handles incoming SOA INFO ipc packets.
4964	- removed debug, updated zones get SOA INFO sent.
4965
496615 Mar 2006: Wouter
4967	- Fixed up domain table insert, it was being used in routines
4968	  that originate from nsd-xfer that do not set compression numbers
4969	  correctly.
4970	- memleak fix in difffile in case of error.
4971	- difffile processing works so that NSD can read an axfr saved
4972	  into the nsd.diff file. (xfrd already request and save it there).
4973	- split off xfrd tcp handling into xfrd-tcp.c.
4974	- cleaned up send_udp in xfrd, and read_state.
4975	- removed xfrd tcp_send_blocking.
4976	- xfrd sets state from ok to refresh to expired based on timeout.
4977	- xfrd sets reload timeout.
4978	- Added zone updated to keep track of zones that are changed
4979	  after a reload. These zones get their information notified
4980	  to xfrd.
4981	- removed unused zprintrr declaration from zonec.h
4982	- nsd sends soa information to xfrd.
4983
498414 Mar 2006: Wouter
4985	- TODO updated
4986	- worked on reload ixfr. It will add/delete RRs and zones.
4987	- xfrd receive parse of xfr messages improved. writes commit.
4988	- server compressed_dname_offsets table is increased if reload
4989	  creates extra names.
4990	- difffile will create zone and apex if not there (i.e. the zone
4991	  is configured but no data file provided).
4992	- bit more verbose in error message for bad diff file.
4993	- Typo fix in sample config file.
4994
499513 Mar 2006: Wouter
4996	- configure sets fseek (fgetpos/fsetpos) to use 64 bit interface
4997	  with _FILE_OFFSET_BITS=64.
4998	- nsd will skip loading the .db if the DB checksum is the same.
4999	- Miek added trace test and nsd kill test.
5000	- Wouter worked on diff file c.
5001
500210 Mar 2006: Wouter
5003	- Cleanup of UDP/TCP code in XFRD.
5004	- xfrd now has tcp max connections and managing. tcp read/write.
5005	- response TC on UDP ixfr, starts TCP.
5006	- sends correct ixfr and axfr queries, a bind server answers.
5007	- made packet_skip_dname() public.
5008	- sets read/write event flags for tcp fd right.
5009
50109 Mar 2006: Wouter
5011	- Removed header from DIFF file format. CRC not that important there,
5012	  you have to check the packets anyway.
5013	- cutest rbtree removed unused clean_rbtree and always_fail routines.
5014	- xfrd timeout handler, more work. Checks expire.
5015
50168 Mar 2006: Wouter
5017	- xfrd sends UDP xfr request to master(s) with timeouts, and stores
5018	  returned data on disk.
5019	- updated dependencies and declaration of write_soa_buffer.
5020
50217 Mar 2006: Wouter
5022	- Fixed printfs for size_t warnings on Mac OsX.
5023
50246 Mar 2006: nsd-team
5025   * Wouter: xfrd read and write work. Statefile is "nsd.xfst".
5026   * Wouter: nsd-checkconf checks dname parse of zone name:.
5027   * Wouter: updated difffile in parser.y, production in server: clause.
5028   * Wouter: zonec now takes -C for 'no config file' option.
5029   * Wouter: updated configyyrename.h for bison 1.875d on sparc.
5030   * Miek: zonec -h and nsd -h exit with exit code = 0.
5031   * Miek & Wouter: updated tpkgs to work again.
5032   * Wouter: xfrd read handle soas, handle soa_incoming part.
5033   * Wouter: moved compare_serial() from nsd-xfer to util.h.
5034
50354 Mar 2006: Wouter
5036	- xfrd zone and soa memory structure definitions.
5037	- xfrd init zones.
5038	- xfrd read and write state file code.
5039	- option for difffile: and xfrdfile: config lines.
5040
50413 Mar 2006: Wouter
5042	- Removed double kill after reload. Only socket cmd send.
5043	- Added code to handle race condition where xfrd is restarted
5044	  during a successful reload. Afterwards, the new server_main
5045	  only has the old xfrd pid, new xfrd is an orphan.
5046	  Solution: when xfrd closes cmd channel (i.e. it quit)
5047	  unexpectedly, send sighup to all processes in the group.
5048	  This should quit the orphan & all children & reload the
5049	  server_main, which will fork the children and xfrd again.
5050
50512 Mar 2006: Wouter
5052	- Added nsd-checkconf.8 to makedist.sh replace list.
5053	- DIFF file format updated.
5054	- removed tsigkey->server value, it was read in, but unused.
5055	- new function to add config file keys to tsig.
5056	- nsd-checkconf checks parsing of keys.
5057	- Updated sample key file with valid keys.
5058	- added first xfrd files. xfrd is started from server_main.
5059	  xfrd listens to server and server to xfrd. xfrd is restarted
5060	  if it dies unexpectedly. xfrd quits when server signals it.
5061	  xfrd survives nsd reloads.
5062	- nsd_options no longer global variable.
5063
50641 Mar 2006: Wouter
5065	- Nicer text in nsd.8.
5066	- nsd.c prettier code in option handling.
5067	- zonec.c code prettier in option handling, also chdir bug removed.
5068	  zonec uses the zone definitions in the config file.
5069	  updated zonec.8 and usage().
5070	- nsd also chdirs to the zonedir, otherwise nsd and zonec would
5071	  try to read the database: file from different directories.
5072	  .(it does the chdir before the chroot call.)
5073	- new calling syntax for zonec and nsd, because of new config file.
5074	- options added acl acceptance tests (no tsig yet).
5075	- added unit test for options.c - for acl tests.
5076	- zonec removed unused vars, nsd-checkconf print arguments.
5077	- nsd-checkconf.8 manual page.
5078
507928 Feb 2006: Wouter
5080	- checked in options.h and config parser code.
5081	- also nsd-checkconf that will test a config file
5082	  .(and optionally show what was read).
5083	- default identity has a spelling error.
5084	- Small fix (typo in example) to config manual page.
5085	- Added ; to configparser.y to please bison 1.75 on bsd.
5086	- Will check for blocked addresses in outgoing acls. Also ranges.
5087	- Check configuration tpkg test added. Uses checkconf.
5088	- checkconf does extra semantic tests. i.e. enable absent features.
5089	- tcpcount and servercount cannot be negative.
5090	- updated nsd.conf.5 manpage for @port syntax.
5091	- changed config parser: allows empty server: part (defaults).
5092	- made nsd.conf.sample file.
5093	- put option to configure for CONFIG_FILE nsd.conf location.
5094	  Note. Already nsdc.conf exists. Both exist now.
5095	- updated makefile dependencies (gcc -MM).
5096	- getopt optstring in nsd-checkconf updated ("v" only option).
5097	- Added config .o files to nsd and zonec. This compiles.
5098	- Added commandline option -c configfile to zonec and nsd.
5099	  configure defaults < configfile < commandline options in importance.
5100
510124 Feb 2006: Wouter
5102	- Added compute_crc in util.h and unit tests for it.
5103	- in cutest.tpkg the number of unit tests was hardcoded
5104	  in the tpkg package. Removed the dependency, cutest exit
5105	  value indicates if any failures happened.
5106	- Added crc at end of NSD-database format. Unique per db.
5107	  upped db version to 7 because of this.
5108	- Tested that crcs are big/little endian correct.
5109	- Added DIFF file spec
5110	- updated tpkg213 which compares md5 on a zonefile for new format.
5111	- added nsd.conf.5 manual page with a draft contents.
5112
511322 Feb 2006: nsd-team
5114   * Miek: Changed over to Cutest testing framework.
5115   * Miek: fixed typo in netio.h
5116   * Miek: fix syntax in rbtree.c put functions on multiple lines.
5117   * Miek: unit test tpkg for cutest.
5118   * Wouter: fixed ptr bug in rbtree unit test.
5119
512017 Feb 2006: Wouter
5121	- rbtree_delete is added and works. Unit tests are there too.
5122	- Changed tail recursion in rbtree_delete to while loop.
5123	- Tagged this version as NSD_3_signalsocket_solution.
5124	  It is the stable 2_2 branch with cleanups, portable, and
5125	  signalhandler solution by socket communication redesign.
5126
512715 Feb 2006: nsd-team
5128   * Wouter: Fixed server_child would wait for two kill signals before quit.
5129   * Miek: don't check for port==0 pkt, just try to send them.
5130	Forward Port of 2.3.
5131   * Wouter: Removed unused, not substituted, @nsdxfer@ from Makefile.in.
5132
513314 Feb 2006: Wouter
5134	- Added unit tests for rbtree. Extensive testing of all functions.
5135	- Added tpkg unit test.
5136	- configure tests for CUnit(optional lib for unit tests). Makefile
5137	  cleanup so it works on non-gmake on freebsd.
5138
513913 Feb 2006: Wouter
5140	- Removed timespec_add(current_time) in server_main, the timeout was
5141	  relative, not absolute. This fixes EINVAL on the timeout on freebsd.
5142	- Added check in configure for compiler flags. Used for -Wextra.
5143	- Added check in configure for va_list definition conflict between
5144	  stdio and stdarg. This happens on DEC Alpha/Debian.
5145	- removed --enable-mmap configure option. There is no mmap support
5146	  in the current codebase.
5147	- renamed local prev to next in domain_next() in namedb.h.
5148	- Removed heap.h. It was not used. Heap and rbtree are mingled anyway.
5149	- in netio.c, in dispatch, it would store the next pointer 'in case
5150	  the handler removes itself'. But if the handler removes that next.
5151	  Then it would fail. So stored the next in struct netio.
5152	  This removes a potential bug. Netio_dispatch is not reentrant.
5153	  Reentry would need a list of iterator* in struct netio.
5154	- Changed process_query() to server_process_query(). It is too
5155	  similar to query_process().
5156
515710 Feb 2006: nsd-team
5158   * Wouter: Improved configure.ac to detect pselect in sys/select.
5159	The check works on freebsd(yes) and fedoracore 3 and 4 (no).
5160	I hope it also works on Solaris.
5161	Also various other prototypes were implicit: chroot, strptime, ...
5162	These are also solved.
5163   * Wouter: Checked configure on sparc5(solaris). Added check for
5164	ctime_r in time.h (for tsig.c). This conf also works on freebsd/linux.
5165   * Wouter: Updated dependencies in makefile for plugin headers.
5166	These are included only when --enable-plugins is present.
5167   * Wouter: Added a send quit over socket to kill commands in server_main,
5168	These act when the fork children fails. If the kill fails, the
5169	socket command hopefully still works.
5170   * Wouter: Put reload code into a separate function. It communicates with
5171	a socket to the old parent, and sends it a quit command. This works
5172	and terminates the old nsd. Left in the kill as a double failsafe.
5173	If the reload process dies, then the parent closes the socket.
5174   * Wouter: Separated the signal mode from the socket-determined nsd->mode.
5175	Every signal function has a variable, so that multiple signals can
5176	arrive. Only the number of signals of the same type is lost, but not
5177	important for nsd. The signals are handled in turn by the run loop.
5178	This completes the coding to remove signal race conditions:
5179	- nsd uses sockets to communicate with its subprocesses(server,reload).
5180	- signal handler routine contains no lengthy system calls.
5181	- signals cannot overwrite a previous signal.
5182   * Wouter: fixed problem where nsd->mode and mode are different in
5183	server_main. Nsd would kill the children, but then restart them again.
5184
518509 Feb 2006: nsd-team
5186   * Wouter: Updated dependencies in Makefile (regenerated them with gcc -MM).
5187   * Wouter: Used splint on the source (with settings to reduce spam.)
5188	And came to the following changes:
5189	- In util.h, make it respect HAVE_CONFIG_H and HAVE_SYSLOG_H.
5190	Also it now defines fallback values for #defines in syslog h.
5191	- Added explicit cast to (unsigned int) in snprintf in dname.c,
5192	dname_to_string routine.
5193   * Wouter: Used extra warnings during gcc compile. -Wextra -Wall
5194	-pedantic -Wbad-function-cast -Wmissing-declarations
5195	-Wmissing-prototypes -Wnested-externs -Wold-style-definition
5196	-Wstrict-prototypes -Wdeclaration-after-statement.
5197	Using -Wtraditional gives too many warnings.
5198   * Wouter: Found a problem with pselect. sys/select.h does not by default
5199	provide the pselect function definition. configure script is
5200	adjusted to test for this and enable _XOPEN_SOURCE=600 to get it.
5201	Found this using the gcc warnings.
5202   * Wouter: dname and rbtree test apps were in make clean target, but
5203	do not exist anymore. Removed from make clean target.
5204   * Wouter: in util log_file() the epoch time_t is passed to printf
5205	without an int cast. Found using extra gcc warnings.
5206   * Wouter: In server.c fixed some signed-unsigned comparisons
5207	using the extra gcc warnings.
5208	- in shutdown and int was used instead of size_t.
5209	- in server_main timeout(signed) was compared with unsigned.
5210	- unused variable in new handler functions.
5211	- in handle_child_command int i instead of size_t was used.
5212	- in zonec the process_rr routine was missing (void) as paramlist.
5213   * Wouter: Added -Wall and -Wextra when --enable-checking is enabled.
5214   * Miek: Ported over the big fat enable checking configure warning.
5215   * Wouter: fixed configure check for pselect on freebsd.
5216
521708 Feb 2006: nsd-team
5218   * Wouter: In server.c also sockets from unexpectedly dead childs are closed.
5219   * Wouter: in nsd.c and server.c cleaned out the signal handler, so that
5220	it only includes two switch/if statements and alters only the mode.
5221	No more calls to alarm(), waitpid(), write(), log_msg().
5222	Instead the work is done in the runloop in server.c and sent by socket.
5223	Also the parent now waits for children. Parent restarts them.
5224   * Wouter: Fixup, the children will quit if the parent closes the command
5225	socket. If parent is killed, they will exit too.
5226   * Wouter: The server_main now listens to children command channels.
5227	Included timeout to check for terminated processes.
5228	Test says that new signal handler works, and child->parent comm.
5229
523007 Feb 2006: nsd-team
5231   * Miek: configure.ac version to 3.0.0
5232   * Miek: looked at: buffer.{ch}, answer.{ch}, dns.{ch}
5233	   those files don't have any changes, except for dns.{ch} for the
5234	   explicit compression.
5235   * Miek: looked at: zlexer.lex and zparser.y; only changes there
5236	for the database changes.
5237   * Wouter: Changed buffer in write_pid from 16 bytes to 32 bytes,
5238	this makes 64 bit numbers fit in the buffer.
5239   * Wouter: Socket connection between parent and child nsds added.
5240	But sighandler now in worse shape. Need to close them. Remove kills.
5241   * Wouter: close the parent and child command channel sockets in shutdown().
5242