From owner-freebsd-net@FreeBSD.ORG Thu Dec 4 19:07:22 2003 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id BCF4F16A4CE for ; Thu, 4 Dec 2003 19:07:22 -0800 (PST) Received: from smtp800.mail.ukl.yahoo.com (smtp800.mail.ukl.yahoo.com [217.12.12.142]) by mx1.FreeBSD.org (Postfix) with SMTP id E76CF43FCB for ; Thu, 4 Dec 2003 19:07:20 -0800 (PST) (envelope-from secureplay@sbcglobal.net) Received: from adsl-67-65-160-144.dsl.hstntx.swbell.net (HELO darkcitylt) (secureplay@sbcglobal.net@67.65.160.144 with login) by smtp1.bt.mail.vip.ukl.yahoo.com with SMTP; 5 Dec 2003 03:07:17 -0000 From: "Val P" To: Date: Thu, 4 Dec 2003 21:06:53 -0600 Organization: Secureplay Consulting Message-ID: <003d01c3badc$d83ca390$d20a0a0a@jvstice.ops.mil> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 In-Reply-To: <20031204200110.B7F3916A4EB@hub.freebsd.org> Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Subject: IP address conflict (transparent bridge) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: secureplay@sbcglobal.net List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Dec 2003 03:07:22 -0000 I have a bridge configured as follows: Bge0 - management interface, ip a.b.c.d Bge1 - down (not used) Bge2 - "inside" bridge leg, no ip, layer-2 only Bge3 - "outside" bridge leg, no ip, layer-2 only Now, I am seeing some weird behavior. If I try to do any type of net = access over bge0, I get console messages such as (paraphrasing, since I don't = have it in front of me): /kernel: arp: 1.2.3.4.5.6 is using my ip address a.b.c.d! /kernel: arp: 7.8.9.10.11.12 is using my ip address a.b.c.d! 1.2.3.4.5.6 is the mac of the bge0 interface 7.8.9.10.11.12 is the mac of the bge3 interface So in other words, why am I getting a conflict between the management interface and a leg of the bridge? Is there some weird loop going on? = There is no bridging loop happening, this is the only bridge on the subnet and connects two datacenter switches (it's a firewall). The router is = upstream on the bge3 side of the bridge. All these interfaces appear to be working fine, the machine is bridging = and I can use the management interface with no apparent problems. If I ping continuously, I get those two messages with every ping. Same for telnet, etc. These messages only appeared for the past week, after the machine = was brought down and back up.=20 This is freebsd 4.8. stock ipf is in use, ipfw is not in use. Disabling = ipf makes no difference. Any input would be appreciated.=20