From owner-freebsd-net@FreeBSD.ORG Fri Apr 11 12:24:47 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 2F2AA106564A for ; Fri, 11 Apr 2008 12:24:47 +0000 (UTC) (envelope-from anders@FreeBSD.org) Received: from fupp.net (totem.fix.no [80.91.36.20]) by mx1.freebsd.org (Postfix) with ESMTP id C6CDE8FC13 for ; Fri, 11 Apr 2008 12:24:46 +0000 (UTC) (envelope-from anders@FreeBSD.org) Received: from localhost (totem.fix.no [80.91.36.20]) by fupp.net (Postfix) with ESMTP id 2453D8DAA4F; Fri, 11 Apr 2008 14:24:45 +0200 (CEST) Received: from fupp.net ([80.91.36.20]) by localhost (totem.fix.no [80.91.36.20]) (amavisd-new, port 10024) with LMTP id bIx6XSC3BMY2; Fri, 11 Apr 2008 14:24:44 +0200 (CEST) Received: by fupp.net (Postfix, from userid 1000) id B21328DAA47; Fri, 11 Apr 2008 14:24:44 +0200 (CEST) Date: Fri, 11 Apr 2008 14:24:44 +0200 From: Anders Nordby To: "Bjoern A. Zeeb" , freebsd-net@FreeBSD.org Message-ID: <20080411122444.GA24519@fupp.net> References: <47D860AC.6030707@freebsd.org> <16497816.post@talk.nabble.com> <20080409075552.GA19027@fupp.net> <20080409082153.W66744@maildrop.int.zabbadoz.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080409082153.W66744@maildrop.int.zabbadoz.net> X-PGP-Key: http://anders.fix.no/pgp/ X-PGP-Key-FingerPrint: 1E0F C53C D8DF 6A8F EAAD 19C5 D12A BC9F 0083 5956 User-Agent: Mutt/1.5.17 (2007-11-01) Cc: 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: Fri, 11 Apr 2008 12:24:47 -0000 Hi, On Wed, Apr 09, 2008 at 08:23:13AM +0000, Bjoern A. Zeeb wrote: >> I had the same problem, and temporarily worked around it by disabling >> SACK: > ok, here we go... > > as I had explained on freebsd-net@ lately there had been 2 changes to > possibly fix this issue. > > I am currently in the process to find out which of the two is actually > needed and which of the two prior versions caused the problems. > > I have a testbed setup and will have it running for another day or so. > > So could you try to reproduce your problems with the following three > servers (if you could ask your affected customers to test and > report back to you that would be highly appreciated as well). I just got access to a remote PC which has the problem, finally. It runs Windows 2000, service pack 4. > Simply open the following URLs in a browser is enough. If you can > see the pages, fine. If you cannot, tell me which worked, which > didn't. > > http://tcptest1.sbone.de/ This URL does not work, I get "siden kan ikke vises" (page can not be displayed in Norwegian). > http://tcptest2.sbone.de/ This URL works fine, I get the FreeBSD 7.0 TCP options test page. > http://tcptest3.sbone.de/ This URL does not work, I get "siden kan ikke vises" (page can not be displayed in Norwegian). > I have a tcpdump running on my side so all connections will be fully > logged. Good. Your patch on http://sources.zabbadoz.net/freebsd/patchset/20080309-01-tcp-options-padding.diff fixes the problem for me, with SACK still being on as it is by default. I would be much happy if this fix could find it's way to RELENG_7_0 and errata. Thanks a lot! Cheers, -- Anders.