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Re: analysis of TCP window size issues still around - several reports /

To: "David S. Miller" <davem@xxxxxxxxxx>
Subject: Re: analysis of TCP window size issues still around - several reports / SACK involved?
From: bert hubert <ahu@xxxxxxx>
Date: Tue, 6 Jul 2004 22:27:08 +0200
Cc: acme@xxxxxxxxxxxxxxxx, shemminger@xxxxxxxx, netdev@xxxxxxxxxxx, alessandro.suardi@xxxxxxxxxx, phyprabab@xxxxxxxxx
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On Tue, Jul 06, 2004 at 01:19:55PM -0700, David S. Miller wrote:

> rather it do this, so that diagnosing dumps are easier.  If tcpdump
> tries to be too clever, scaling the window, then I might end up
> chasing down a tcpdump bug rather than a TCP one :-)

True - it might want to print '43 (*128=5706)' or something like that.

> What would be more interesting is to get the tcpdump trace from the
> other side of this connection.  This is crucial, as it will show how
> and in what way exactly the window scale options and/or window fields
> are being edited by a firewall or other device and thus causing
> the problems.

I have an appointment with Alessandro tomorrow evening at 11PM CEST to do
just that.

It sounds like window scaling may become yet another ECN...

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