From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-we0-f180.google.com (mail-we0-f180.google.com [74.125.82.180]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id B01F321F0AE for ; Fri, 4 Jan 2013 14:25:38 -0800 (PST) Received: by mail-we0-f180.google.com with SMTP id t57so7835552wey.25 for ; Fri, 04 Jan 2013 14:25:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:message-id:date:from:user-agent:mime-version:to:subject :references:in-reply-to:content-type:content-transfer-encoding; bh=l/g7E6IIhVI7gkB14HNdV4VlJwyjSvKNJI1sX/jv5go=; b=IiJCkpTBICxGubTnHVFv0M1zQoNzJCmNxlZJnLv7JyN25fy8eGWnhjF77v5h6s1NP8 D/mvoTt87kiUwRpSwKXq1QPMSz0fTQj5QGAu5HME+qJ1JixOTH8VxlrWbmQWN51c6wD5 w1prFSJK+uOWjLNB6u0JdTBe4q6Wq3t1JQ3R3vVbX0V2O+WDBNuCb83iBTUlx0hR5d2v 2nnc9OffwFxRj8SmvE6eTuwLh9sUnRUrciw9te+QTONiGe3+ymshtt9lVyaefQJup6Zh BpYuW/8OqYvhkI8v1fl2v/eOcfYNbMT8n4zokawEkKqQhpLw3C+XVAilfGDeiur2Ukcx yPRw== X-Received: by 10.194.77.13 with SMTP id o13mr86351388wjw.58.1357338336719; Fri, 04 Jan 2013 14:25:36 -0800 (PST) Received: from ?IPv6:2001:470:6aac:3::2aa7:14c? ([2001:470:6aac:3::2aa7:14c]) by mx.google.com with ESMTPS id fv2sm995401wib.4.2013.01.04.14.25.35 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 04 Jan 2013 14:25:36 -0800 (PST) Message-ID: <50E756DE.6000406@gmail.com> Date: Fri, 04 Jan 2013 22:25:34 +0000 From: Robert Bradley User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: cerowrt-devel@lists.bufferbloat.net References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Cerowrt-devel] TFO crashes cerowrt 3.7.1-1 X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jan 2013 22:25:39 -0000 On 04/01/13 20:42, Maciej Soltysiak wrote: > This is very weird, because TFO is TCP and the DNS queries fired off by > polipo are UDP: > root@OpenWrt:/tmp/log# tcpdump -n -v -vv -vvv -x -X -s 1500 -i lo > This is the only DNS traffic I saw during the attempts. The tcpdumps have > udp bad checksum but when I disabled TFO in polipo, the UDP where still bad > checksum but they worked. > Really weird. I think this is a side effect of the loopback interface not processing checksums by default. I will be more worried if the checksum errors also occur on ge00, but am not ruling out problems with the unaligned access patches yet. As an aside, I've noticed very occasional issues connecting to (IPv4-only) sites using both Sugarland and the 3.6.10 release, which gets fixed when the connection is retried. I have been unable to repeat this on demand, however. -- Robert Bradley