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    SubjectRe: bizarre TCP behavior
    On Wed, Apr 11, 2001 at 02:21:42AM +0200, Andi Kleen wrote:

    > Try echo 0 > /proc/sys/net/ipv4/tcp_ecn
    > If it helps complain to the sites that their firewall is broken.

    Not always firewall related.
    There are companies like Zyxel that ship broken router
    too.

    For example the Zyxel 681 SDSL-Router breaks ECN by
    stripping 0x80 (ECN Cwnd Reduced) but not 0x40 (ECN Echo)
    (TOS bits) on all SYN packets (!).

    I complained because of this two times more than a month ago
    but they do not even respond.

    I do not know if they are unable or just unwilling to fix it;
    maybe they just unable to read RFC's.

    --

    ciao -
    Stefan
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