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On Tue, Jul 24, 2007 at 09:31:37PM +0200, 6bone@6bone.informatik.uni-leipzi=
g.de wrote:
[...]
> bash-3.2# tcpdump -vpni wm0 port 22
> tcpdump: listening on wm0, link-type EN10MB (Ethernet), capture size 96=
=20
> bytes
> 15:11:16.469732 IP (tos 0x10, ttl  64, id 32065, offset 0, flags [DF],=20
> length: 292, bad cksum 0 (->741a)!) 139.18.25.35.22 > 139.18.25.33.65436:=
=20
> P 946513:946753(240) ack 1008 win 33580 <nop,nop,timestamp 22 22>
>=20
> I think the problem only occurs with outgoing packets.

Maybe I'm missing something with the way that thing is supposed to work,
but if the system let the NIC do the checksum calculation, why do you
expect anything but 0 in that field in tcpdump output _on the host_?

--=20
Quentin Garnier - cube@cubidou.net - cube@NetBSD.org
"You could have made it, spitting out benchmarks
Owe it to yourself not to fail"
Amplifico, Spitting Out Benchmarks, Hometakes Vol. 2, 2005.

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