From owner-freebsd-questions@FreeBSD.ORG  Mon Jun 13 19:26:09 2005
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
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 3245916A43B
	for <freebsd-questions@freebsd.org>;
	Mon, 13 Jun 2005 19:26:09 +0000 (GMT)
	(envelope-from jhary@unsane.co.uk)
Received: from unsane.co.uk (unsane.co.uk [62.140.220.90])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 663B043D1F
	for <freebsd-questions@freebsd.org>;
	Mon, 13 Jun 2005 19:26:08 +0000 (GMT)
	(envelope-from jhary@unsane.co.uk)
Received: from canth ([10.0.0.10]) (authenticated bits=0)
	by unsane.co.uk (8.13.3/8.13.3) with ESMTP id j5DJQZQZ070053;
	Mon, 13 Jun 2005 20:26:35 +0100 (BST)
	(envelope-from jhary@unsane.co.uk)
Message-Id: <200506131926.j5DJQZQZ070053@unsane.co.uk>
From: "Vince" <jhary@unsane.co.uk>
To: "'Alfredo Aguirre'" <aguirre@canal22.org.mx>,
	<freebsd-questions@freebsd.org>
Date: Mon, 13 Jun 2005 20:26:17 +0100
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Office Outlook, Build 11.0.6353
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
thread-index: AcVwS1FfKK86AL7TRxSAVbWAnNcWbQAAK64w
In-Reply-To: <63826.207.249.4.240.1118686283.squirrel@webmail.canal22.org.mx>
Cc: 
Subject: RE: configuring two network interfaces, same subnet
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 13 Jun 2005 19:26:09 -0000

 

> -----Original Message-----
> From: owner-freebsd-questions@freebsd.org 
> [mailto:owner-freebsd-questions@freebsd.org] On Behalf Of 
> Alfredo Aguirre
> Sent: 13 June 2005 19:11
> To: freebsd-questions@freebsd.org
> Subject: configuring two network interfaces, same subnet
> 
> Hello people!,
> 
Hi

> I'm trying to configure 2 network interfaces in the same 
> subnet, because i want to  use one interface for NS and the 
> other for MX,
> 
> if i try
> bash-2.05b# ifconfig em0 aa.bb.dd.1 netmask 255.255.255.0 
> bash-2.05b# ifconfig em1 aa.cc.ee.2 netmask 255.255.255.0
> ifconfig: ioctl (SIOCAIFADDR): File exists
> 
> ok they both cannot be in the same subnet.

Yep this thread here 
http://lists.freebsd.org/pipermail/freebsd-net/2003-July/001108.html
Seems to cover it quite well.


> 
> i know that i cannot have them both in the same subnet 
> without modifying the routing, but im confussed about it.
> 
> i also tried after settin' one of the ips, deleting the routing
> 
> bash-2.05b# route delete aa.bb.cc.0
> 
> and then setting the ip
> 
> bash-2.05b# ifconfig em0 aa.bb.dd.1 netmask 255.255.255.
> 
> ok i can now set the 2 ips in the same subnet but my DNS 
> stops working,
> 
> i dont want to change the submask, for any of my ips
> 

As far as I know you cannt have 2 interfaces on the same subnet
full stop on freebsd, and to be fair I cant see what advantage 
it would give you if you could.

Vince

> well im confused about it, so i hope you guys could adress me 
> in the right direction,
> 
> Thanks in advance,
> 
> Alfredo
> 
> 
> 
> _______________________________________________
> freebsd-questions@freebsd.org mailing list 
> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> To unsubscribe, send any mail to 
> "freebsd-questions-unsubscribe@freebsd.org"
>