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From: Stephen Hemminger <shemminger@linux-foundation.org>
To: linux-kernel@vger.kernel.org
Subject: Re: regression(?): starting with 2.6.21 sending packets became broken.
Date: Sat, 13 Oct 2007 16:23:24 -0700	[thread overview]
Message-ID: <20071013162324.7c140a61@freepuppy.rosehill> (raw)
In-Reply-To: <Pine.LNX.4.64.0710132233000.3348@fbirervta.pbzchgretzou.qr>

On Sat, 13 Oct 2007 22:35:25 +0200 (CEST)
Jan Engelhardt <jengelh@computergmbh.de> wrote:

> 
> On Oct 13 2007 19:59, David wrote:
> >Try
> >
> >echo 0 > /proc/sys/net/ipv4/tcp_window_scaling
> >
> >I bet you have broken router(s) between your machine and the problem
> >site(s).
> 
> There is an xt_TCPOPTSTRIP module in the works that allows you to strip
> Window Scaling only on the connections you want (rather than globally);
> seems to be in for 2.6.24 at earliest, though it's there is also the 
> standalone patch.

You can also do it on a per route basis which is easier than bothering
with filtering rules by just enforcing a window size limit.

	ip route add {broken_dst}/32 via {gateway} window 65535


Long description at:
	http://lwn.net/Articles/92727/

-- 
Stephen Hemminger <shemminger@linux-foundation.org>


  reply	other threads:[~2007-10-13 23:24 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-13 18:16 Peter Volkov
2007-10-13 18:59 ` David
2007-10-13 20:35   ` Jan Engelhardt
2007-10-13 23:23     ` Stephen Hemminger [this message]
2007-10-28  8:33   ` Peter Volkov

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