From owner-freebsd-net@FreeBSD.ORG  Tue Jan 25 15:21:01 2005
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Date: Tue, 25 Jan 2005 15:22:09 +0000
From: Bruce M Simpson <bms@spc.org>
To: Jeremie Le Hen <jeremie@le-hen.org>
Message-ID: <20050125152209.GK47638@dhcp120.icir.org>
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cc: freebsd-net@freebsd.org
Subject: Re: gif(4) and bpf(4)
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On Tue, Jan 25, 2005 at 04:02:55PM +0100, Jeremie Le Hen wrote:
> Does any one have other ideas ?  It seems the code was partly written
> by sam@, brooks@ and shin@.

Interesting. It seems gif isn't passing anything back at all. Can you verify
that the routes for the addresses you're pinging traverse gif0? I'd
probably also try csjp@'s bpfstat tool to get a closer look at what's
going on in bpf.

Also try assigning a local address to an instance of gif on the affected
system and pinging a destination through it using the -r and -S options
whilst running tcpdump to be sure.

Can you post the revision(s) of the source files? e.g.:
	src/sys/net/if_gif.c
	src/sys/netinet/in_gif.c
	src/sys/netinet6/in6_gif.c
...and uname -a?

Hope this helps,
BMS