Re: 4.6.2-p23 and [tcp bad cksum]

From: Igor Sysoev (is_at_rambler-co.ru)
Date: 10/03/03

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    Date: Fri, 3 Oct 2003 11:45:27 +0400 (MSD)
To: Will Froning <wfroning@pacific.edu>

    On Thu, 2 Oct 2003, Will Froning wrote:

    > > Which is which?
    >
    > The 2 boxes that didn't work, one had a Fiber EM and the other had a
    > copper BGE running at 100 full (Dell 1650 and 2550 respectively)
    >
    > The 4.9-pre is a Fiber EM (dell 2600).
    >
    > > Which one was causing large amount of checksum errors?
    >
    > Both of the 4.6.2 boxes.
    >
    > > Which one fixed it? etc etc etc etc.
    >
    > Upgrading the 4.6.2 boxes to 4.8 fixed the problem allowed the messages
    > to pass through. Although I didn't record a tcpdump when it started
    > working, as it scrolled by I noticed a reduction in the number of
    > errors.

    I'm not sure but I think you had built your kernels with -O2 and encountered
    a seldom bug that was fixed in 4.6-STABLE:
    http://docs.freebsd.org/cgi/getmsg.cgi?fetch=727930+0+/usr/local/www/db/text/2002/cvs-all/20020707.cvs-all

    Igor Sysoev
    http://sysoev.ru/en/

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