From owner-freebsd-net@FreeBSD.ORG Mon Mar 26 14:00:59 2012 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B002C106566B for ; Mon, 26 Mar 2012 14:00:59 +0000 (UTC) (envelope-from universite@ukr.net) Received: from ffe15.ukr.net (ffe15.ukr.net [195.214.192.50]) by mx1.freebsd.org (Postfix) with ESMTP id 62F6A8FC1B for ; Mon, 26 Mar 2012 14:00:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ukr.net; s=ffe; h=Date:Message-Id:From:To:Subject:Content-Type:Content-Transfer-Encoding:MIME-Version; bh=VY06Oq1+rwS1Nr7XD0HXpfv0afxLZh/iXnjro8xxjEU=; b=M30ixTr5QT2rqWfAXV9b83x+YiYT0wJRms1IAofOmMC1KxbeT1SmIonT0k5HQ/eaHzyRvFv/MijWtcI3ptxRablyluF7N8FnOxvbs1+qIcwiwlDX/909WlKv3iiYhqdbNavgLr6uot2ZHL+hirlEuV0fsiwZDpSwQnrJlJc13qs=; Received: from mail by ffe15.ukr.net with local ID 1SCAD6-0002S7-LQ for net@freebsd.org; Mon, 26 Mar 2012 16:43:48 +0300 MIME-Version: 1.0 Content-Disposition: inline Content-Transfer-Encoding: binary Content-Type: text/plain; charset="windows-1251" To: net@freebsd.org From: =?WINDOWS-1251?B?wuvg5Ojx6+DiIM/w7uTg7Q==?= X-Mailer: freemail.ukr.net 4.0 X-Originating-Ip: [91.208.138.251] Message-Id: <8904.1332769428.5720084203749900288@ffe15.ukr.net> X-Browser: Mozilla/5.0 (Windows NT 6.1; rv:11.0) Gecko/20100101 Firefox/11.0 Date: Mon, 26 Mar 2012 16:43:48 +0300 Cc: Subject: The problem with MTU <1500 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: Mon, 26 Mar 2012 14:00:59 -0000 Dear all! I have two different values of uplink MTU - 1440 and 1492. And in a local network - 1500. In Cisco routers can be set 'set ip df 0', but I have no such router :( What options are there for FreeBSD? Only use the net/tcpmssd? Will it be possible to process both two channels of 1Gb? -- Vladislav V. Prodan System & Network Administrator http://support.od.ua +380 67 4584408, +380 99 4060508 VVP88-RIPE