bad tcp/udp checksumsc with 5704C

[Ruslan Ermilov]

On Wed, Apr 07, 2004 at 10:09:33AM -0700, Kris Kennaway wrote:
[...]
> I ran into this yesterday with a different NIC, and Peter Wemm told me
> that tcpdump indeed gets it wrong for locally-generated packets when
> the card does checksum offloading.  Indeed, when I ran the tcpdump on
> another machine on the LAN it verified that the checksums on those
> packets were all correct.
> 
This is even more odd when the card does VLAN stripping/tagging in
hardware.  RELENG_4 gets it slightly less wrong though.


Cheers,
-- 
Ruslan Ermilov
ru at FreeBSD.org
FreeBSD committer
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