Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760122AbXEQVPd (ORCPT ); Thu, 17 May 2007 17:15:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757327AbXEQVPH (ORCPT ); Thu, 17 May 2007 17:15:07 -0400 Received: from main.gmane.org ([80.91.229.2]:47925 "EHLO ciao.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755122AbXEQVPF (ORCPT ); Thu, 17 May 2007 17:15:05 -0400 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: Philip Pemberton Subject: IPv6: 6to4 tunnel randomly cutting out on 2.6.8.1 - any patches? Date: Thu, 17 May 2007 21:59:31 +0100 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: 87-194-114-122.bethere.co.uk User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2620 Lines: 42 Hi, I'm currently trying to set IPv6 up on a Linux-based router. The aforementioned router runs kernel 2.6.8.1, and just about all the hardware driver modules are binary modules. For the record, I'd love to upgrade the router to one of the newer kernels, but AIUI I can't do it because I don't have the source to the bmods. But anyway... What I've done is set up an IPv6 subnet via the SixXS tunnel broker (and I've also tried the BT Exact tunnel broker, which has the same problem). This tunnel is then routed onto my LAN and set up router advertisement (with radvd) so the machines can get access to the IPv6 side of the Internet. The problem is that every 10 minutes or so, the IPv6 link (apparently the routing side as the router can still ping kame.net, but the other machines on the LAN can't) stops working for a few seconds (between 5 and 60) and comes back up of its own free will. Running the tunnel on another machine (with a 2.6.16 kernel) stops the problem completely - IPv6 works perfectly. But being the energy-conscious person I am, I'd prefer to have as few machines powered up as possible. When IPv6 stops working, ping returns the error "sendmsg: Network is unreachable". The intermittent nature of this issue, and the fact that IPv6 works fine when I move routing to a machine with a later kernel, leads me to believe that this may be an old kernel bug that got fixed in a later release, but evidently not this one... There appear to be a number of IPv6 related fixes in 2.6.9, but the patches are all globbed together in a single "patch-2.6.9.bz2" file - I'd like to apply some of the more promising ones directly, and try and fix the problem that way. The problem being that I can't find these patches as individual "this fixes X" releases, just as one huge 'go from 2.6.8.1 to 2.6.9' glob, and the git repository on kernel.org only seems to go back to 2.6.11. So what I'm wondering is, does anyone know if a bug like I've described was ever found between 2.6.8.1 and 2.6.16, and if so how it can be fixed? Thanks. -- Phil. | (\_/) This is Bunny. Copy and paste Bunny usenet07@philpem.me.uk | (='.'=) into your signature to help him gain http://www.philpem.me.uk/ | (")_(") world domination. If mail bounces, replace "07" with the last two digits of the current year. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/