Date: Thu, 4 Dec 2003 21:06:53 -0600 From: "Val P" <secureplay@sbcglobal.net> To: <freebsd-net@freebsd.org> Subject: IP address conflict (transparent bridge) Message-ID: <003d01c3badc$d83ca390$d20a0a0a@jvstice.ops.mil> In-Reply-To: <20031204200110.B7F3916A4EB@hub.freebsd.org>
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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
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