From owner-freebsd-net@FreeBSD.ORG Fri Oct 30 23:12:42 2009 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 42B20106566B for ; Fri, 30 Oct 2009 23:12:42 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout022.mac.com (asmtpout022.mac.com [17.148.16.97]) by mx1.freebsd.org (Postfix) with ESMTP id 3122A8FC18 for ; Fri, 30 Oct 2009 23:12:41 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Received: from cswiger1.apple.com ([17.227.140.124]) by asmtp022.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0KSC00LV0LN3UX30@asmtp022.mac.com> for freebsd-net@freebsd.org; Fri, 30 Oct 2009 15:11:28 -0700 (PDT) Message-id: <18C758A7-1908-4D1A-BDCA-80FF7FD8BC22@mac.com> From: Chuck Swiger To: Sebastian Hyrwall In-reply-to: <4AEB7AE8.5090101@keff.org> Date: Fri, 30 Oct 2009 15:11:27 -0700 References: <4AEB7AE8.5090101@keff.org> X-Mailer: Apple Mail (2.936) Cc: freebsd-net@freebsd.org Subject: Re: Hi. /31 on ethernet links 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, 30 Oct 2009 23:12:42 -0000 On Oct 30, 2009, at 4:46 PM, Sebastian Hyrwall wrote: > Is there any way to use /31's on ordinary ethernet links in 7.2? > "ifconfig addr dest-addr" does not work either. It keeps setting the > last ip as broadcast. A /31 subnet is only defined for point-to-point network links, per: http://www.rfc-editor.org/rfc/rfc3021.txt Ordinary ethernet links have BROADCAST flag set instead of POINTOPOINT. Regards, -- -Chuck