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Date: Tue, 11 Apr 2006 16:54:35 -0400
From: John Heffner <jheffner@psc.edu>
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To: Daniel Drake <dsd@gentoo.org>
CC: netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: 2.6.17 regression: Very slow net transfer from some hosts
References: <443C03E6.7080202@gentoo.org> <443C024C.2070107@psc.edu> <443C0B74.50305@gentoo.org> <443C09A7.2040900@psc.edu> <443C1738.20605@gentoo.org>
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This is almost certainly due to a buggy firewall that doesn't understand 
TCP window scaling.  I've usually seen this in the past with OpenBSD 
firewalls.  Do you have one of these in your path?

Thanks,
   -John