From owner-freebsd-net@FreeBSD.ORG Sat Jul 28 17:08:37 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 3915E16A417 for ; Sat, 28 Jul 2007 17:08:37 +0000 (UTC) (envelope-from fullermd@over-yonder.net) Received: from optimus.centralmiss.com (ns.centralmiss.com [206.156.254.79]) by mx1.freebsd.org (Postfix) with ESMTP id 0F9BB13C483 for ; Sat, 28 Jul 2007 17:08:36 +0000 (UTC) (envelope-from fullermd@over-yonder.net) Received: from draco.over-yonder.net (adsl-072-148-013-213.sip.jan.bellsouth.net [72.148.13.213]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by optimus.centralmiss.com (Postfix) with ESMTP id 0DF5C28B36; Sat, 28 Jul 2007 11:37:52 -0500 (CDT) Received: by draco.over-yonder.net (Postfix, from userid 100) id 9285361C42; Sat, 28 Jul 2007 11:37:51 -0500 (CDT) Date: Sat, 28 Jul 2007 11:37:51 -0500 From: "Matthew D. Fuller" To: Lee Johnston Message-ID: <20070728163751.GU21345@over-yonder.net> References: <46AA1082.6010503@wildcard.net.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <46AA1082.6010503@wildcard.net.uk> X-Editor: vi X-OS: FreeBSD User-Agent: Mutt/1.5.16-fullermd.4 (2007-06-09) Cc: freebsd-net@freebsd.org Subject: Re: 31-Bit IPv4 Prefixes 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: Sat, 28 Jul 2007 17:08:37 -0000 On Fri, Jul 27, 2007 at 04:34:26PM +0100 I heard the voice of Lee Johnston, and lo! it spake thus: > > We've just been allocated a /31 for a point-to-point over ethernet. > Any idea if FreeBSD supports 31-bit prefixes as per RFC 3021? I don't think it does (but that's not positive knowledge). You can probably faking it by assigning the address as a /32, then manually adding a static route through that interface to the other address. -- Matthew Fuller (MF4839) | fullermd@over-yonder.net Systems/Network Administrator | http://www.over-yonder.net/~fullermd/ On the Internet, nobody can hear you scream.