From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753740AbWKGHHx (ORCPT ); Tue, 7 Nov 2006 02:07:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754076AbWKGHHw (ORCPT ); Tue, 7 Nov 2006 02:07:52 -0500 Received: from dsl027-180-168.sfo1.dsl.speakeasy.net ([216.27.180.168]:17847 "EHLO sunset.davemloft.net") by vger.kernel.org with ESMTP id S1753711AbWKGHHw (ORCPT ); Tue, 7 Nov 2006 02:07:52 -0500 Date: Mon, 06 Nov 2006 23:07:55 -0800 (PST) Message-Id: <20061106.230755.38710002.davem@davemloft.net> To: neilb@suse.de Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: TCP stack sometimes loses ACKs ... or something From: David Miller In-Reply-To: <17744.10620.389409.136737@cse.unsw.edu.au> References: <17744.10620.389409.136737@cse.unsw.edu.au> X-Mailer: Mew version 4.2 on Emacs 21.4 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Window scaling... there is some intermediate device which is trying to prevent "out of window" segments from passing through, but it is not taking the negotiated window scale into account. So it thinks that segments are outside of the window, when they are not.