new copyright notice

pcb lookup cache; IP_RECVDSTADDR support; additional statistics;
change to ctlinput notify routine (passes errno)

protocol's usrreq now frees any "control" data;
rearrange udp output in preparation for use of cached ip header,
user-spec. ttl & tos

start shifting away from udpip structure (part done); new ctlinput
so port unreachables match only correct socket; more stats (sklower);
extra arg for control (tmp); disconnect resets local addr as w

start shifting away from udpip structure (part done); new ctlinput
so port unreachables match only correct socket; more stats (sklower);
extra arg for control (tmp); disconnect resets local addr as well as remote

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expand maximum datagram size to 9K for benefit of NFS

get rid of unneeded include of dir.h

sockaddr len

mark state of kernel before variable length sockaddrs (by sklower).

bug fix from dwaitzma@NNSC.NSF.NET: pullup *after* ip_stripoptions

install approved copyright notice

lint

don't assume two's complement (good luck, Louis!)

use Berkeley specific header

one sofree ought to do it, and don't mark socket disconnected
just after sofree'ing it (just in case)

add patchable udp ttl

4.3BSD release version

wake him up if we're talking to him

bug: don't soisdisconnected on datagram sockets, want to reconnect

ifdefs for 4.2 compat

smaller TTL

consolidate route caching, manipulation in IP

add arg to icmp_error (incoming interface of offending packet;
to make source address of redirects correct)

save copy of ip header of received packet, in case want to error;
don't toss socket on error; ctlinput takes a sockaddr; allow IP options
on output

Add copyright

remove ip_ctlinput, do all the work in higher level ctlinput's