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#!/usr/bin/env python
# Fri, 27 Jun 14 (NZST)
# test-ip6-tunnel.py: Demonstrate IPv6 objects tunnelled in IPv4
# Copyright (C) 2015, Nevil Brownlee, U Auckland | WAND
from plt_testing import *
t = get_example_trace('tunnel.pcap')
# tunnel.pcap has packets from a v6-in-v4 tunnell
n = 0
for pkt in t:
n += 1 # Wireshark uses 1-org packet numbers
ip = pkt.ip
if not ip:
test_println("%5d: non-IP packet" % (n), get_tag())
continue
d = ip.payload
#print_data("<d>", 6, d, 120)
ip6 = plt.ip6(d)
test_println("%5d: " % (n), get_tag())
print_ip6(ip6, 12, get_tag("n:"+str(n)))
# tcp = pkt.tcp # Fails - the IP part of pkt has IP6 as it's proto
tcp = ip6.tcp # We have to look at the decapsulated IPb
if tcp:
print_tcp(tcp, 12, get_tag("n:"+str(n)))
#if n == 2:
# break
t.close() # Don't do this inside the loop!
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