xref: /openbsd-src/regress/sys/netinet6/nd6/nd6_una.py (revision f6aab3d83b51b91c24247ad2c2573574de475a82)
1#!/usr/local/bin/python3
2# send Unsolicited Neighbor Advertisement
3
4print("send unsolicited neighbor advertisement packet")
5
6import os
7from addr import *
8from scapy.all import *
9
10# link-local solicited-node multicast address
11def nsma(a):
12	n = inet_pton(socket.AF_INET6, a)
13	return inet_ntop(socket.AF_INET6, in6_getnsma(n))
14
15# ethernet multicast address of multicast address
16def nsmac(a):
17	n = inet_pton(socket.AF_INET6, a)
18	return in6_getnsmac(n)
19
20# ethernet multicast address of solicited-node multicast address
21def nsmamac(a):
22	return nsmac(nsma(a))
23
24# link-local address
25def lla(m):
26	return "fe80::"+in6_mactoifaceid(m)
27
28ip=IPv6(src=lla(LOCAL_MAC), dst="ff02::1")/ICMPv6ND_NA(tgt=LOCAL_ADDR6)
29eth=Ether(src=LOCAL_MAC, dst=nsmac("ff02::1"))/ip
30
31sendp(eth, iface=LOCAL_IF)
32time.sleep(1)
33
34exit(0)
35