From owner-freebsd-stable@FreeBSD.ORG Wed Mar 7 18:07:26 2007 Return-Path: X-Original-To: freebsd-stable@FreeBSD.ORG Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 1928E16A402 for ; Wed, 7 Mar 2007 18:07:26 +0000 (UTC) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (lurza.secnetix.de [83.120.8.8]) by mx1.freebsd.org (Postfix) with ESMTP id 72C8F13C4B3 for ; Wed, 7 Mar 2007 18:07:25 +0000 (UTC) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (szcdsd@localhost [127.0.0.1]) by lurza.secnetix.de (8.13.4/8.13.4) with ESMTP id l27I7Iqs060995; Wed, 7 Mar 2007 19:07:23 +0100 (CET) (envelope-from oliver.fromme@secnetix.de) Received: (from olli@localhost) by lurza.secnetix.de (8.13.4/8.13.1/Submit) id l27I7ItU060994; Wed, 7 Mar 2007 19:07:18 +0100 (CET) (envelope-from olli) Date: Wed, 7 Mar 2007 19:07:18 +0100 (CET) Message-Id: <200703071807.l27I7ItU060994@lurza.secnetix.de> From: Oliver Fromme To: freebsd-stable@FreeBSD.ORG, dudu.meyer@gmail.com In-Reply-To: X-Newsgroups: list.freebsd-stable User-Agent: tin/1.8.2-20060425 ("Shillay") (UNIX) (FreeBSD/4.11-STABLE (i386)) MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.1.2 (lurza.secnetix.de [127.0.0.1]); Wed, 07 Mar 2007 19:07:23 +0100 (CET) Cc: Subject: Re: Bridging problems on IP address conflict X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: freebsd-stable@FreeBSD.ORG, dudu.meyer@gmail.com List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Mar 2007 18:07:26 -0000 Eduardo Meyer wrote: > Peter Jeremy wrote: > > Eduardo Meyer wrote: > > > bridge0: flags=8043 mtu 1500 > > > ether ac:de:48:df:0d:8c > > > priority 32768 hellotime 2 fwddelay 15 maxage 20 > > > member: fxp0 flags=3 > > > member: em0 flags=3 > > > > > > bridge1: flags=8043 mtu 1500 > > > ether ac:de:48:fe:cd:41 > > > priority 32768 hellotime 2 fwddelay 15 maxage 20 > > > member: xl1 flags=3 > > > member: xl0 flags=3 > > > > > > And my system constantly reports: > > > > > > arp: 00:13:20:1c:33:22 is using my IP address XX.YY.ZZ.KK! > > > > > > several (thoundsands of) times. In fact this ARP is my own fxp0 > > > interface, and this is the only interface that has this IP. What > > > should I do? Ass IP on the bridge0 interface instead of the fxp0 > > > bridge member? Or anything else? > > [...] > > This may be indicative of a loop in your switch network - is there any > > way that packets leaving fxp0 can re-appear on em0, xl0 or xl1? > > 5.5-STABLE system. The topology: > > - em0 and xl0 crossover (straight from router) to freebsd bridge > - fxp0 and xl1 on a common switch (maybe causing a loop?) Yes, that's a loop. Packets leaving fxp0 can be sent back by the switch to your xl1. You should fix your topology. Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd "One of the main causes of the fall of the Roman Empire was that, lacking zero, they had no way to indicate successful termination of their C programs." -- Robert Firth