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SubjectRe: 2.6.9 tcp problems
It is possible that the autoneg code has changed between 2.4 and 2.6
for the interface connected to the current firewall, and that you lose
packets because of a duplex mismatch. Please check the negociation
with ethtool on your system, and do so on the other firewall.

Regards,
willy

On Mon, Nov 29, 2004 at 01:03:34PM -0500, kernel wrote:
> I've run into a problem with 2.6.(8.1,9) after installing a secondary
> firewall. When I try to pull data through the original firewall (mail,
> http, ssh), it stops after approx. 260k. Running ethereal tells me "A
> segment before the frame was lost" followed by a bunch of "This is a
> TCP duplicate ack" when using ssh. All 2.4.x machines and windows
> clients work fine. I built 2.4.28 and it works fine from my machine. I
> also fiddled with tcp_ecn and that didn't fix it either. I don't have
> any problems communicating to "local" machines. I've attached the
> tcpdump output from an scp attempt. NIC is a 3Com Corporation 3c905B.
>
> Thanks !
> walt
>


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