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SubjectRe: Massive TCPv4 bad checksum
> Geert Uytterhoeven <> writes:
> > On Sat, 17 Oct 1998, H.J. Lu wrote:
> >> I have massive TCPv4 bad checksum on my CSLIP link from
> >> my CSLIP server to my machine ever since I upgraded to
> >> linux 2.1.1xx. Any suggestions?
> > My m68k box generates plenty of these messages when receiving packets from my
> > PPC box. This would indicate a bug in the checksum code for either (or both)
> > m68k and PPC.
> > But I also see the message on my AXP box, when receiving packets from the PPC.
> > The Intel box on our network reports no bad checksums at all. None of the
> > Linux boxes report any bad checksums from the Winslows machines.
> > Who's (who are?) the bad guy(s)?
> Is there a systematic on what types of packets arrive with bad checksums?

Most of the bad packets are from ftp and rsh. As the result, my
ftp and CVS over rsh on my CSLIP link are much slower than 2.0.

H.J. Lu (

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