Re: ipv6 gateway on different subnet

On Sat, Jan 18, 2025 at 03:48:03PM -0600, Peter Miller wrote:
> Is this what I'm after? I sent 2 pings and had tcpdump running just
> before and a few seconds after.
> To me it looks like the server responded to the request, but this is
> my first foray into tcpdump.
> 
> ..."tgt is 2602:fed2:7116:d82c::b, Flags [solicited, override]"

Yes, that's the one we want to have a close look at and compare with
what Linux does.

Ideally, you'll want to have that captured to a file, i.e.

  tcpdump -npi vioif0 -vw icmp6.pcap icmp6

this will only capture to a file, but won't show much while capturing,
but you can then check the file with

  tcpdump -nver icmp6.pcap

which should get you the output you were seeing from tcpdump.

This has the benefit that you'll capture all the bytes in the file
(and not just what tcpdump decodes) - just in case you'll later want
to have an even deeper look at the packet and really look at all the
bytes.


Christof

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