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#!/usr/local/bin/python3
# send Address Resolution neighbor solicitation
# expect an neighbor advertisement answer and check it
print("send address resolution neighbor solicitation packet")
import os
from addr import *
from scapy.all import *
# link-local solicited-node multicast address
def nsma(a):
n = inet_pton(socket.AF_INET6, a)
return inet_ntop(socket.AF_INET6, in6_getnsma(n))
# ethernet multicast address of multicast address
def nsmac(a):
n = inet_pton(socket.AF_INET6, a)
return in6_getnsmac(n)
# ethernet multicast address of solicited-node multicast address
def nsmamac(a):
return nsmac(nsma(a))
# link-local address
def lla(m):
return "fe80::"+in6_mactoifaceid(m)
ip=IPv6(src=LOCAL_ADDR6, dst=nsma(REMOTE_ADDR6))/ICMPv6ND_NS(tgt=REMOTE_ADDR6)
eth=Ether(src=LOCAL_MAC, dst=nsmamac(REMOTE_ADDR6))/ip
if os.fork() == 0:
time.sleep(1)
sendp(eth, iface=LOCAL_IF)
os._exit(0)
ans=sniff(iface=LOCAL_IF, timeout=3, filter=
"ip6 and src "+REMOTE_ADDR6+" and dst "+LOCAL_ADDR6+" and icmp6")
for a in ans:
if a and a.type == ETH_P_IPV6 and \
ipv6nh[a.payload.nh] == 'ICMPv6' and \
icmp6types[a.payload.payload.type] == 'Neighbor Advertisement':
tgt=a.payload.payload.tgt
print("target=%s" % (tgt))
if tgt == REMOTE_ADDR6:
exit(0)
print("TARGET!=%s" % (REMOTE_ADDR6))
exit(1)
print("NO NEIGHBOR ADVERTISEMENT")
exit(2)
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