From owner-freebsd-net@FreeBSD.ORG Wed Apr 9 08:25:09 2008 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6F99D1065671 for ; Wed, 9 Apr 2008 08:25:09 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from mail.cksoft.de (mail.cksoft.de [62.111.66.27]) by mx1.freebsd.org (Postfix) with ESMTP id 27B7A8FC7A for ; Wed, 9 Apr 2008 08:25:08 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from localhost (amavis.str.cksoft.de [192.168.74.71]) by mail.cksoft.de (Postfix) with ESMTP id 0266941C53E; Wed, 9 Apr 2008 10:25:06 +0200 (CEST) X-Virus-Scanned: amavisd-new at cksoft.de Received: from mail.cksoft.de ([62.111.66.27]) by localhost (amavis.str.cksoft.de [192.168.74.71]) (amavisd-new, port 10024) with ESMTP id 2zmWQi71Mzw5; Wed, 9 Apr 2008 10:25:05 +0200 (CEST) Received: by mail.cksoft.de (Postfix, from userid 66) id A1BE841C7B5; Wed, 9 Apr 2008 10:25:05 +0200 (CEST) Received: from maildrop.int.zabbadoz.net (maildrop.int.zabbadoz.net [10.111.66.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.int.zabbadoz.net (Postfix) with ESMTP id 75CFD44487F; Wed, 9 Apr 2008 08:21:38 +0000 (UTC) Date: Wed, 9 Apr 2008 08:21:38 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@maildrop.int.zabbadoz.net To: Anders Nordby In-Reply-To: <20080409075552.GA19027@fupp.net> Message-ID: <20080409081957.G66744@maildrop.int.zabbadoz.net> References: <47D860AC.6030707@freebsd.org> <16497816.post@talk.nabble.com> <20080409075552.GA19027@fupp.net> X-OpenPGP-Key: 0x14003F198FEFA3E77207EE8D2B58B8F83CCF1842 MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-net@freebsd.org, s3raphi Subject: Re: TCP options order changed in FreeBSD 7, incompatible with some routers X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Apr 2008 08:25:09 -0000 On Wed, 9 Apr 2008, Anders Nordby wrote: Hi, > I had the same problem, and temporarily worked around it by disabling > SACK: > > sysctl net.inet.tcp.sack.enable=0 > > Which solved my problems. It would be interesting to see if this helps > you also? This will hide any of the real problems in most cases, not fix them. > If so, it seems this issue is related to SACK and TCP order maybe? Hmm. So you hadn't been following the threads here the last 6 weeks? 7-STABLE already has patches. See my other mails in here.... -- Bjoern A. Zeeb bzeeb at Zabbadoz dot NeT Software is harder than hardware so better get it right the first time.