From owner-freebsd-net@FreeBSD.ORG  Thu Apr 10 12:27:38 2003
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id EE0C637B404
	for <freebsd-net@freebsd.org>; Thu, 10 Apr 2003 12:27:37 -0700 (PDT)
Received: from rigel.cs.pdx.edu (rigel.cs.pdx.edu [131.252.208.59])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 9FBAD43F85
	for <freebsd-net@freebsd.org>; Thu, 10 Apr 2003 12:27:34 -0700 (PDT)
	(envelope-from sashi@cs.pdx.edu)
Received: from sirius.cs.pdx.edu (root@sirius.cs.pdx.edu [131.252.208.57])
	by rigel.cs.pdx.edu (8.12.8/8.12.8) with ESMTP id h3AJRXjw017011
	(version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO)
	for <freebsd-net@freebsd.org>; Thu, 10 Apr 2003 12:27:33 -0700 (PDT)
Received: from sirius.cs.pdx.edu (sashi@localhost [127.0.0.1])
	by sirius.cs.pdx.edu (8.12.8/8.12.8) with ESMTP id h3AJRX2J027018
	for <freebsd-net@freebsd.org>; Thu, 10 Apr 2003 12:27:33 -0700 (PDT)
Received: from localhost (sashi@localhost)h3AJRWcA027015
	for <freebsd-net@freebsd.org>; Thu, 10 Apr 2003 12:27:32 -0700 (PDT)
Date: Thu, 10 Apr 2003 12:27:32 -0700 (PDT)
From: Sashikiran Rachakonda <sashi@cs.pdx.edu>
To: freebsd-net@freebsd.org
Message-ID: <Pine.GSO.4.21.0304101226530.26981-100000@sirius.cs.pdx.edu>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Subject: Question Regarding IP Alias 
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 10 Apr 2003 19:27:38 -0000


Hi,i have a question regarding the IP Alias. If i bind my interface to 2
ip addresses say
		
		1) ifconfig xl0 add w.x.y.z netmask 255.255.255.0 
		2) ifconfig xl0 add p.q.r.s netmask 255.255.0.0

Is there a way that i can force the packets coming-out of this interface
to have ipSrc = p.q.r.s and not w.x.y.z. My question is is there a way
that you can tell the interface to have the IPsrc set to the one we want
to, for all packets coming out of this interface.

Thanx in Advance,
--Sashi.