From owner-freebsd-net@FreeBSD.ORG  Tue Dec 16 13:08:35 2008
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
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 623B91065677
	for <freebsd-net@freebsd.org>; Tue, 16 Dec 2008 13:08:35 +0000 (UTC)
	(envelope-from shteryana@gmail.com)
Received: from wf-out-1314.google.com (wf-out-1314.google.com [209.85.200.170])
	by mx1.freebsd.org (Postfix) with ESMTP id 3BAFB8FC1B
	for <freebsd-net@freebsd.org>; Tue, 16 Dec 2008 13:08:35 +0000 (UTC)
	(envelope-from shteryana@gmail.com)
Received: by wf-out-1314.google.com with SMTP id 24so3345596wfg.7
	for <freebsd-net@freebsd.org>; Tue, 16 Dec 2008 05:08:35 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=domainkey-signature:received:received:message-id:date:from:reply-to
	:sender:to:subject:cc:in-reply-to:mime-version:content-type
	:content-transfer-encoding:content-disposition:references
	:x-google-sender-auth;
	bh=VtCZGNVobZSJTdCW4fW7Wwd/LTFvEW4AzsvdAlG8uVc=;
	b=jpyAQJwhFGMsGcbo0AEZTOcU1xd7h/e3J1qhBjNGFtTEOiJ7xI81ntL83USqHSn0J1
	zmxoAB0dmujYWuXsxVyjW9cb5K7YI0qU1CvokeMZv49OrYG4LTmhrKvQFmJuAw/LqtKa
	RaO7p3gYWnrNNmuj+gPpUUm0fM4XEVvAl7Hls=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma;
	h=message-id:date:from:reply-to:sender:to:subject:cc:in-reply-to
	:mime-version:content-type:content-transfer-encoding
	:content-disposition:references:x-google-sender-auth;
	b=nOznKHlU7N+DHlAjamNgrn2bdreD+I34D5feObR4xpELz2zqcaBTIdxtfJyYQxaC21
	JDJWgK1kfaN8VvdXGto1Wu/MTmbuiccN8mKuDhp/j7WnwOwMf67GlA9a5K44ANwjIfyC
	75HL10LHXaFUrUzY5GT7I0XIo6pbpLDWf/oSY=
Received: by 10.142.48.14 with SMTP id v14mr3293626wfv.166.1229431284599;
	Tue, 16 Dec 2008 04:41:24 -0800 (PST)
Received: by 10.142.177.16 with HTTP; Tue, 16 Dec 2008 04:41:24 -0800 (PST)
Message-ID: <61b573980812160441m68027f88ic67d5eb532b4c311@mail.gmail.com>
Date: Tue, 16 Dec 2008 14:41:24 +0200
From: "Shteryana Shopova" <syrinx@freebsd.org>
Sender: shteryana@gmail.com
To: "Randy Bush" <randy@psg.com>
In-Reply-To: <49478988.2070208@psg.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <49478988.2070208@psg.com>
X-Google-Sender-Auth: ecb09a000adeb510
Cc: freebsd-net@freebsd.org, Gabe <nrml@att.net>
Subject: Re: FreeBSD network failover
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: syrinx@FreeBSD.org
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: Tue, 16 Dec 2008 13:08:35 -0000

Maybe try lagg(4) in Failover mode?

On Tue, Dec 16, 2008 at 12:57 PM, Randy Bush <randy@psg.com> wrote:
>>>> I have a nat'd box which obviously has an internal and external ip
>>>> address. The box has a third interface which is configured to a
>>>> DSL connection. My goal is for that interface to be activated if
>>>> the external side fails so that outbound traffic still flows. Any
>>>> of you know of a way to accomplish this regardless of the type of
>>>> failure.
>