Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 23 Apr 2002 05:39:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 23 Apr 2002 05:39:34 -0400 Received: from whiskey.openminds.be ([212.35.126.198]:63165 "EHLO whiskey.openminds.be") by vger.kernel.org with ESMTP id ; Tue, 23 Apr 2002 05:39:34 -0400 Date: Tue, 23 Apr 2002 11:39:35 +0200 From: Frank Louwers To: linux-kernel@vger.kernel.org Subject: BUG: 2 NICs on same network Message-ID: <20020423113935.A30329@openminds.be> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.21i X-PGP2: 1024R/1A899409 C3 D8 FA D3 E0 0E 40 C5 10 32 83 74 36 F0 E5 95 X-oldGPG: 1024D/3F6A7EDD D597 566A BDF5 BBFB C308 447A 5E81 1188 3F6A 7EDD X-GPG: 1024D/E592712F E857 266C 04BE 0772 B9C4 E798 3D34 D5E5 E592 712F Organisation: Openminds - http://www.openminds.be/ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, We recently stummed across a rather annoying bug when 2 nics are on the same network. Our situation is this: we have a server with 2 nics, each with a different IP on the same network, connected to the same switch. Let's assume eth0 has ip 1.2.3.1 and eth1 has 1.2.3.2, with a both with a netmask of 255.255.255.0. Now the strange thing is that traffic for 1.2.3.2 arrives at eth0 no matter what! Even if we disconnect the cable for eth1, 1.2.3.2 still replies to pings, ssh, web, ... We tested this on IA32 architecture, different 2.4.x kernels and different nics ... Is this a bug or a known issue? If it is not a bug, how can it be solved? Kind Regards, Frank Louwers -- Openminds bvba www.openminds.be Tweebruggenstraat 16 - 9000 Gent - Belgium - 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/