From owner-freebsd-current@FreeBSD.ORG Tue Aug 9 21:36:54 2005 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 49EB216A438 for ; Tue, 9 Aug 2005 21:36:54 +0000 (GMT) (envelope-from david.orman@orblivion.com) Received: from pulsar.orblivion.com (orblivion.com [66.29.24.80]) by mx1.FreeBSD.org (Postfix) with ESMTP id F268543D69 for ; Tue, 9 Aug 2005 21:36:51 +0000 (GMT) (envelope-from david.orman@orblivion.com) Received: by pulsar.orblivion.com (Postfix, from userid 1001) id AA392E71E7; Tue, 9 Aug 2005 17:36:56 -0400 (EDT) Date: Tue, 9 Aug 2005 17:36:56 -0400 From: "David J. Orman" To: freebsd-current@freebsd.org Message-ID: <20050809213656.GA90417@corenode.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.1i Subject: strange mtu warnings X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Aug 2005 21:36:54 -0000 Hi again, This problem only started happening since upgrading from 5.4-p6 to 6-beta2 on one of my test firewalls. Aug 9 11:25:46 firewall1 kernel: bridge0: MTU mismatch, frame length 1514 exceeds 1500 on sis1 Aug 9 11:26:14 firewall1 last message repeated 223 times Aug 9 11:26:14 firewall1 kernel: bridge0: MTU mismatch, frame length 1514 exceeds 1500 on sis0 Aug 9 11:26:15 firewall1 kernel: bridge0: MTU mismatch, frame length 1514 exceeds 1500 on sis1 So on and so forth, for ALL traffic coming in/out. I went from using the freebsd bridge to if_bridge which was imported from netbsd for a variety of reasons. Bridging same NICs, nothing has changed other than the freebsd version, and the switch from the freebsd bridging utility to the imported netbsd one. 1514 would be the MTU of ethernet, but not sure why it's appearing here. sis0: flags=8943 mtu 1500 options=8 inet6 fe80::209:5bff:fee0:af51%sis0 prefixlen 64 scopeid 0x1 ether 00:09:5b:e0:af:51 media: Ethernet autoselect (100baseTX ) status: active sis1: flags=8943 mtu 1500 options=8 inet6 fe80::209:5bff:fee0:a746%sis1 prefixlen 64 scopeid 0x2 ether 00:09:5b:e0:a7:46 media: Ethernet autoselect (10baseT/UTP ) status: active bridge0: flags=41 mtu 1500 ether ac:de:48:3b:d5:62 priority 32768 hellotime 2 fwddelay 15 maxage 20 member: sis1 flags=3 member: sis0 flags=3 All three are MTU 1500, so is this a bug or? Any possible solutions? Thanks, David