From owner-freebsd-questions@FreeBSD.ORG Sat Mar 25 15:01:03 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 51D6216A41F for ; Sat, 25 Mar 2006 15:01:03 +0000 (UTC) (envelope-from gpeel@thenetnow.com) Received: from webmaillogin.com (fr5.webmaillogin.com [216.40.35.69]) by mx1.FreeBSD.org (Postfix) with ESMTP id E922B43D45 for ; Sat, 25 Mar 2006 15:01:02 +0000 (GMT) (envelope-from gpeel@thenetnow.com) Received: from [216.240.12.2] (account gpeel@thenetnow.com HELO GRANT) by fr5.webmaillogin.com (CommuniGate Pro SMTP 4.3.8) with ESMTPA id 161578051 for freebsd-questions@freebsd.org; Sat, 25 Mar 2006 10:01:01 -0500 Message-ID: <013501c6501c$ee8ecc40$6401a8c0@GRANT> From: "Grant Peel" To: Date: Sat, 25 Mar 2006 10:00:56 -0500 Organization: The Net Now Internet MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Subject: Re: em device on 4.x: ifconfig alias issue X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Grant Peel List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Mar 2006 15:01:03 -0000 Hi Marc, I don't pretend to know anything about Address Resolution and Routing, but one thing I know (through many hours of frustration), is that an aliased address (in your case, somehting like em0:23), IF the ip address being aliases, belongs in the same subnet as anotherone on the same machine, the second one must use a 255 subnet ( /0 ?). example: em0 192.168.0.1 255.255.255.0 em0_0 192.168.0.2 255.255.255.255 ... em0_23 10.10.10.10 255.255.255.192 em0_43 10.10.10.11 255.255.255.255 em0_59 10.10.10.15 255.255.255.255 Hope this helps, if not soory about the waste of time! -Grant