SixXS::Sunset 2017-06-06

capture tunnel packets
[in] Shadow Hawkins on Saturday, 23 June 2012 12:14:49
when I start my AICCU 'tcpdump icmp' does not give any response while pinging. Can anybody give a tcpdump expression to capture tunnel packets only.
capture tunnel packets
[ch] Jeroen Massar SixXS Staff on Saturday, 23 June 2012 19:46:30
It depends on what you want to see, but likely you are looking for:
tcpdump -i sixxs -Xns 0 icmp6
That shows only ICMPv6 (icmp6) on the interface called 'sixxs' (depending on what your tunnel interface is called). Note that "icmp" is IPv4 ICMP, while "icmp6" is ICMPv6 aka the ICMP for IPv6. Of course you should also check that your tunnel actually works on the IPv4 layer by dumping there.
capture tunnel packets
[in] Shadow Hawkins on Monday, 25 June 2012 07:34:11
Thanks a lot!!That's what I was looking for.

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