From owner-freebsd-net@FreeBSD.ORG Wed Feb 20 21:54:53 2008 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 0C71716A409 for ; Wed, 20 Feb 2008 21:54:53 +0000 (UTC) (envelope-from bms@FreeBSD.org) Received: from out3.smtp.messagingengine.com (out3.smtp.messagingengine.com [66.111.4.27]) by mx1.freebsd.org (Postfix) with ESMTP id D522813C4D3 for ; Wed, 20 Feb 2008 21:54:52 +0000 (UTC) (envelope-from bms@FreeBSD.org) Received: from compute1.internal (compute1.internal [10.202.2.41]) by out1.messagingengine.com (Postfix) with ESMTP id 4EFE794501; Wed, 20 Feb 2008 16:54:52 -0500 (EST) Received: from heartbeat2.messagingengine.com ([10.202.2.161]) by compute1.internal (MEProxy); Wed, 20 Feb 2008 16:54:52 -0500 X-Sasl-enc: Iedr51vnCN2TLpkT9YzwGwEoUEIqEqciWHCw9VDNH7Y/ 1203544491 Received: from empiric.lon.incunabulum.net (82-35-112-254.cable.ubr07.dals.blueyonder.co.uk [82.35.112.254]) by mail.messagingengine.com (Postfix) with ESMTPSA id A39A42ACA3; Wed, 20 Feb 2008 16:54:51 -0500 (EST) Message-ID: <47BCA1AA.7060800@FreeBSD.org> Date: Wed, 20 Feb 2008 21:54:50 +0000 From: "Bruce M. Simpson" User-Agent: Thunderbird 2.0.0.9 (X11/20080207) MIME-Version: 1.0 To: Wes Peters References: <20080219021012.95B1116A4CB@hub.freebsd.org> <8E87DC1A-6EC2-4E53-9FA3-17E694BE7846@opensail.org> In-Reply-To: <8E87DC1A-6EC2-4E53-9FA3-17E694BE7846@opensail.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Nick Barnes , freebsd-net@freebsd.org Subject: Re: Multiple default routes on multihome host 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: Wed, 20 Feb 2008 21:54:53 -0000 Wes Peters wrote: > I see a number of people have replied to this message offering > solutions of how to accomplish your migration, using a variety of > tools available to you in FreeBSD. I've always found this community > very supportive in this fashion, and I'm glad they've jumped in to > help you in your transition as well. Please note that the variety of > solutions presented recognize that your transition period is just > that, a temporary situation, and that "multiple default routes" is not > the solution. The thing is, in a peer-to-peer or ad-hoc mesh network, not having access to a single next-hop serving as the gateway of last resort has a much higher probability of occurring than in a fully converged network with more deterministic layer 3 behaviour. So we're largely arguing apples vs oranges here. Fact of the matter is, we can't tell people how to run their networks, or which protocols to run. People want IP everywhere and they want it now. (Infinite demand for free goods is another story.) The argument that functionality "should not" be present because people "should not" run their networks that way carries no water -- particularly so when issues of wireless presence and ad-hoc networks blow the old assumptions out of the water. later BMS