From owner-freebsd-net@FreeBSD.ORG  Fri Feb 27 00:20:01 2009
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 1C7681065670
	for <freebsd-net@freebsd.org>; Fri, 27 Feb 2009 00:20:01 +0000 (UTC)
	(envelope-from ady@ady.ro)
Received: from mail-ew0-f166.google.com (mail-ew0-f166.google.com
	[209.85.219.166])
	by mx1.freebsd.org (Postfix) with ESMTP id 896008FC13
	for <freebsd-net@freebsd.org>; Fri, 27 Feb 2009 00:19:59 +0000 (UTC)
	(envelope-from ady@ady.ro)
Received: by ewy10 with SMTP id 10so976489ewy.43
	for <freebsd-net@freebsd.org>; Thu, 26 Feb 2009 16:19:59 -0800 (PST)
MIME-Version: 1.0
Received: by 10.210.112.1 with SMTP id k1mr157400ebc.47.1235693998973; Thu, 26 
	Feb 2009 16:19:58 -0800 (PST)
In-Reply-To: <3853.206.108.16.89.1235693214.squirrel@alder.hosix.com>
References: <3650.206.108.16.89.1235691792.squirrel@alder.hosix.com>
	<3853.206.108.16.89.1235693214.squirrel@alder.hosix.com>
Date: Fri, 27 Feb 2009 01:19:58 +0100
Message-ID: <78cb3d3f0902261619t71a054fet43779c37e2981603@mail.gmail.com>
From: Adrian Penisoara <ady@freebsd.ady.ro>
To: Shawn Everett <shawn@tandac.com>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-Content-Filtered-By: Mailman/MimeDel 2.1.5
Cc: freebsd-net@freebsd.org
Subject: Re: FreeBSD Router Problem
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
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: Fri, 27 Feb 2009 00:20:01 -0000

Hi,

On Fri, Feb 27, 2009 at 1:06 AM, Shawn Everett <shawn@tandac.com> wrote:

> Sorry I meant to say FreeBSD 7.0 :)
>
> > Hi Guys,
> >
> > Here's a weird one...  I set up FreeBSD 5.2 to act as a router.  I used
> > the pf.conf script shown at:
> > http://www.openbsd.org/faq/pf/pools.html#outgoing
> >
> > Everything works just fine.  Traffic is appropriately load balanced and
> > things work as expected.
> >
> > Strangely after a few hours something just stops routing traffic.  I
> can't
> > ping the remote gateways either.  Both external interfaces still show the
> > correct IP addresses.  Rebooting the BSD box solves the problem.  Nothing
> > else gets rebooted.


 Any error messages in dmesg output ?
 Significant changes in "netstat -m" output before and after ?
 The same for "pfctl -s all" output...


>
> >
> > Any suggestions would be appreciated.


Try tcpdump'ing on the router's interfaces an on the source machine and
compare the packet flows -- do the packets reach the router ? Do they
attempt to pass to the outside ?

Regards,
Adrian.