Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756482AbYKTOZv (ORCPT ); Thu, 20 Nov 2008 09:25:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756008AbYKTOXz (ORCPT ); Thu, 20 Nov 2008 09:23:55 -0500 Received: from mtl.rackplans.net ([69.90.0.18]:47467 "EHLO mtl.rackplans.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755984AbYKTOXx (ORCPT ); Thu, 20 Nov 2008 09:23:53 -0500 Date: Thu, 20 Nov 2008 09:24:45 -0500 (EST) From: Gerhard Mack X-X-Sender: gmack@mtl.rackplans.net To: linux-kernel@vger.kernel.org Subject: 2.6.26.x and 2.6.27.x 2.6.27-rc* regression: ssh and tun/tap problem. In-Reply-To: Message-ID: References: User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1543 Lines: 36 I have a series of gateways using ssh tunnels and I have discovered that they stop working if I upgrade them past kernel 2.6.25. This seems to happen regardless of the reciving end's kernel version. About 20 to 30 seconds after the tunnel comes up the interface stops recieving packets with no errors show on the remote side and the local side showing a single dropped packet. If I tcpdump a ping it shows that the remote side is getting packets and is replying but the local side is only sending. This problem is only cleared by resetting the tunnel but then it only works for another 20 to 30 seconds. None of the other interfaces show any errors and traffic flows over them without problem. Anyone have any idea what has gone wrong? tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:172.16.1.2 P-t-P:172.16.1.1 Mask:255.255.255.252 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:1 overruns:0 frame:0 TX packets:23 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 B) TX bytes:1884 (1.8 KiB) -- Gerhard Mack gmack@innerfire.net <>< As a computer I find your faith in technology amusing. -- 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/