From owner-freebsd-net Wed Nov 28 23:52:23 2001 Delivered-To: freebsd-net@freebsd.org Received: from falcon.prod.itd.earthlink.net (falcon.mail.pas.earthlink.net [207.217.120.74]) by hub.freebsd.org (Postfix) with ESMTP id 4AE7A37B41B for ; Wed, 28 Nov 2001 23:52:12 -0800 (PST) Received: from dialup-209.247.138.241.dial1.sanjose1.level3.net ([209.247.138.241] helo=blossom.cjclark.org) by falcon.prod.itd.earthlink.net with esmtp (Exim 3.33 #1) id 169LzO-00031I-00; Wed, 28 Nov 2001 23:52:11 -0800 Received: (from cjc@localhost) by blossom.cjclark.org (8.11.6/8.11.3) id fAT7q8606957; Wed, 28 Nov 2001 23:52:08 -0800 (PST) (envelope-from cjc) Date: Wed, 28 Nov 2001 23:52:08 -0800 From: "Crist J. Clark" To: justin@mac.com Cc: freebsd-net@FreeBSD.ORG Subject: Re: netmask for aliased ip Message-ID: <20011128235208.O3985@blossom.cjclark.org> Reply-To: cjclark@alum.mit.edu References: <20011128170815.G3985@blossom.cjclark.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from justin@mac.com on Wed, Nov 28, 2001 at 10:24:28PM -0800 X-URL: http://people.freebsd.org/~cjc/ Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Wed, Nov 28, 2001 at 10:24:28PM -0800, justin@mac.com wrote: > FWIW, the FreeBSD FAQ (10.9) sez this (it's a one-liner that shows the > netmask 0xffffffff). I'll send in a doc PR for this. The ifconfig(8) page gets it right. alias Establish an additional network address for this interface. This is sometimes useful when changing network numbers, and one wishes to accept packets addressed to the old interface. If the address is on the same subnet as the first network address for this interface, a netmask of 0xffffffff has to be specified. -- Crist J. Clark | cjclark@alum.mit.edu | cjclark@jhu.edu http://people.freebsd.org/~cjc/ | cjc@freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message