Date: Mon, 02 May 2005 18:12:03 +0200 From: Andre Oppermann <andre@freebsd.org> To: Matthew Sullivan <matthew@uq.edu.au> Cc: freebsd-current@freebsd.org Subject: Re: DF (Don't frag) issues Message-ID: <42765153.3090409@freebsd.org> In-Reply-To: <42764EC4.7030403@uq.edu.au> References: <20050424150211.GA87520@walton.maths.tcd.ie> <426BC78A.3E56D99B@freebsd.org> <426C1600.106@uq.edu.au> <426D2307.97D15253@freebsd.org> <426D306B.7010000@freebsd.org> <426E0F5C.3F157398@freebsd.org> <4272AF49.1090400@uq.edu.au> <42763D42.BB3B5416@freebsd.org> <427643E2.4070008@uq.edu.au> <42764884.8070704@freebsd.org> <42764EC4.7030403@uq.edu.au>
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Matthew Sullivan wrote: > Andre Oppermann wrote: > >> Matthew Sullivan wrote: >> >>> Give me the switches you want on tcpdump and I'll be happy to provide >>> the packets ;-) >> >> This should do the trick: >> >> tcpdump -n -p -i fxp0 -s 128 -w dump >> > Ok this is what you have: > > root@scorpion:~# tcpdump -n -p -i fxp0 -s 128 -w pktdump not port 24 > > and it's at: http://scorpion.sorbs.net/ICMP/pktdump Ok, this is the problem: MTU of next hop: 0 Have you installed my patch on the gateway machine too, or only on your host? MTU of next hop should not be zero under normal circumstances. It indicates a bug somewhere in the normal IP forwarding path. Is this the correct packet flow: ... --> dc0 --> gif0 --> IPSec --> fxp0 --> Internet --> ... -- Andre
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