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    SubjectRe: Reproducable 2.1.95 checksum error
    >>>>> "DSM" == David S Miller <> writes:

    DSM> Ok, cool, keep me informed. Another bogon I know about are
    DSM> Solaris-2.5 and older machines without all the correct patches
    DSM> installed, these can output bad checksums too.

    I get (way too many) bad TCP Checksums between a RedHat 4.2 machine
    running ppp-2.3.3 on the latest kernel from RedHat (2.0.32) and
    a RedHat 5.0 machine running ppp-2.3.3 on the 2.1.95 kernel (and also
    a lot of kernels before that).

    2.0.32 to 2.0.32 works perfectly in the same setup.

    When I check /proc/net/dev on both machines, only the 2.1.95 one
    reports errors. Apparently all frames received by the 2.0.32 machine
    are fine.

    If the checksum algorithm used is the same for both transmit and
    receive, it would be expected that _both_ hosts would complain about
    bad checksums.

    Also, if the problem is in a lower layer (such as PPP), it would be
    expected that both directions suffer equally.

    Any ideas?


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