From owner-freebsd-net@FreeBSD.ORG Fri Jul 20 17:20:21 2007 Return-Path: Delivered-To: freebsd-net@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EE58F16A41A for ; Fri, 20 Jul 2007 17:20:21 +0000 (UTC) (envelope-from SRS0=a3fa025e4cd4e551cf489a0571430d1df480ce2b=402=es.net=dart@es.net) Received: from postal1.es.net (postal1.es.net [IPv6:2001:400:14:3::6]) by mx1.freebsd.org (Postfix) with ESMTP id 8EA3D13C4B3 for ; Fri, 20 Jul 2007 17:20:21 +0000 (UTC) (envelope-from SRS0=a3fa025e4cd4e551cf489a0571430d1df480ce2b=402=es.net=dart@es.net) Received: from [192.168.13.32] (c-24-4-182-157.hsd1.ca.comcast.net [24.4.182.157]) by postal1.es.net (Postal Node 1) with ASMTP (SSL) id ZYO79220 for ; Fri, 20 Jul 2007 10:20:20 -0700 Date: Fri, 20 Jul 2007 10:19:58 -0700 From: Eli Dart User-Agent: Thunderbird 1.5.0.12 (Windows/20070509) MIME-Version: 1.0 To: freebsd-net@FreeBSD.org References: <200707150237.l6F2bAgZ011098@redrock.karels.net> <469E0FFF.8070802@seclark.us> In-Reply-To: <469E0FFF.8070802@seclark.us> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Message-Id: <20070720172021.8EA3D13C4B3@mx1.freebsd.org> Cc: Subject: Re: 6.2 mtu now limits size of incomming packet X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Jul 2007 17:20:22 -0000 Stephen Clark wrote: >> > So was any decision reached on this issue - will FreeBSD changed to > accept a packet on an > interface that is larger than the mtu on that interface? If possible, I'd like to see the ability to enforce interface MTU for received packets preserved in a sysctl if it is removed for the default config... In other words, something like: net.link.mtu_limits_received_pktsize = 0|1 Then, default it to 0 to preserve 4.x behavior. Thanks, --eli -- Eli Dart Office: (510) 486-5629 ESnet Network Engineering Group Fax: (510) 486-6712 Lawrence Berkeley National Laboratory PGP Key fingerprint = C970 F8D3 CFDD 8FFF 5486 343A 2D31 4478 5F82 B2B3