From owner-freebsd-net@FreeBSD.ORG  Thu Jan  8 11:55:27 2015
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 28F73C54
 for <freebsd-net@freebsd.org>; Thu,  8 Jan 2015 11:55:27 +0000 (UTC)
Received: from smarthost1.sentex.ca (smarthost1.sentex.ca
 [IPv6:2607:f3e0:0:1::12])
 (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
 (Client CN "smarthost.sentex.ca", Issuer "smarthost.sentex.ca" (not verified))
 by mx1.freebsd.org (Postfix) with ESMTPS id E6CC8605
 for <freebsd-net@freebsd.org>; Thu,  8 Jan 2015 11:55:26 +0000 (UTC)
Received: from [IPv6:2607:f3e0:0:4:f025:8813:7603:7e4a] (saphire3.sentex.ca
 [IPv6:2607:f3e0:0:4:f025:8813:7603:7e4a])
 by smarthost1.sentex.ca (8.14.9/8.14.9) with ESMTP id t08BtL7r061192;
 Thu, 8 Jan 2015 06:55:21 -0500 (EST) (envelope-from mike@sentex.net)
Message-ID: <54AE6FF4.6030504@sentex.net>
Date: Thu, 08 Jan 2015 06:54:28 -0500
From: Mike Tancsa <mike@sentex.net>
Organization: Sentex Communications
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64;
 rv:31.0) Gecko/20100101 Thunderbird/31.3.0
MIME-Version: 1.0
To: Przemyslaw Frasunek <przemyslaw@frasunek.com>, freebsd-net@freebsd.org
Subject: Re: Corrupted IPv6 routing table
References: <54ADBDDC.3040901@frasunek.com>
In-Reply-To: <54ADBDDC.3040901@frasunek.com>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
X-Scanned-By: MIMEDefang 2.75
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/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, 08 Jan 2015 11:55:27 -0000

On 1/7/2015 6:14 PM, Przemyslaw Frasunek wrote:
> Dear all,
>
> We are running FreeBSD 9.2-RELEASE-p3 on few PPPoE access servers, each
> servicing about 1000 customers. Each server exchanges customers' /32 (for IPv4)
> and /64 (for IPv6) routes using OSPF and BIRD.
>
> Few times in a month, we are experiencing routing table corruption, which causes
> spurious IPv6 routes appearing with prefixlen 0:

I saw this a few yrs ago when I tried mpd with ipv6 after about a month. 
  There are some threads (i think on freebsd-net) about it and some of 
the areas that needed to be fixed.  I had to give up on v6 and mpd as a 
result.  I seem to recall some commits to RELENG_10 that might had 
addresses some of the bugs I saw, but thats just speculation.  Have you 
tried RELENG_10 as an LNS ?

	---Mike


-- 
-------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada   http://www.tancsa.com/