From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765584AbXLOBME (ORCPT ); Fri, 14 Dec 2007 20:12:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753539AbXLOBLy (ORCPT ); Fri, 14 Dec 2007 20:11:54 -0500 Received: from mga11.intel.com ([192.55.52.93]:61276 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752776AbXLOBLx convert rfc822-to-8bit (ORCPT ); Fri, 14 Dec 2007 20:11:53 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.24,170,1196668800"; d="scan'208";a="439919360" X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Subject: ARP Bug? Date: Fri, 14 Dec 2007 17:11:52 -0800 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: ARP Bug? Thread-Index: Acg+t3oLTt8aGwoWSum4AjmxOhPOKQ== From: "Gosney, JeremiX" To: Cc: "Peters, Gordon" , "Sy, Dely L" X-OriginalArrivalTime: 15 Dec 2007 01:11:53.0267 (UTC) FILETIME=[7A595030:01C83EB7] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We've noticed the 2.6-based Linux systems in our test lab are experiencing some "ARP flux"-like symptoms. The systems reply with eth0's hardware address to all ARP requests, regardless of the IP being queried. Because of this, the system will only send and receive packets on eth0; if eth0 is brought down, the system is unreachable even though it still has several active connections. With eth0 unplugged, none of the other interfaces are reachable (this is presumably a side-effect caused by the switch ARP cache.) Failover routes are defined in the routing table, but the system still will not send/receive packets out those interfaces. Can anything be done to correct this behaviour? Jeremi M Gosney Enterprise Linux Engineer DIJIC, Intel Corporation Work: 253-371-4849 Mobile: 253-495-4254