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    SubjectRe: Poor TCP Performance 2.4.0-10 <-> Win98 SE PPP
    "David S. Miller" wrote:
    > Date: Mon, 06 Nov 2000 22:44:00 -0800
    > From: Jordan Mendelson <>
    > Attached to this message are dumps from the windows 98 machine using
    > windump and the linux 2.4.0-test10. Sorry the time stamps don't match
    > up.
    > (ie. Linux sends bytes 1:21 both the first time, and when it
    > retransmits that data. However win98 "sees" this as 1:19 the first
    > time and 1:21 during the retransmit by Linux)
    > That is bogus. Something is mangling the packets between the Linux
    > machine and the win98 machine. You mentioned something about
    > bandwidth limiting at your upstream provider, any chance you can have
    > them turn this bandwidth limiting device off?

    It actually turns out that that problem with bandwidth was fixed
    yesterday, so this can not be the problem here and yes, is
    a linux box. :)

    > Or maybe earthlink is using some packet mangling device?
    > It is clear though, that something is messing with or corrupting the
    > packets. One thing you might try is turning off TCP header
    > compression for the PPP link, does this make a difference?

    Actually, there has been several reports that turning header compression
    does help.

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