From owner-freebsd-current@FreeBSD.ORG Wed Nov 15 09:45:18 2006 Return-Path: X-Original-To: current@FreeBSD.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 43D2E16A51F for ; Wed, 15 Nov 2006 09:45:18 +0000 (UTC) (envelope-from dwmalone@maths.tcd.ie) Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [134.226.81.11]) by mx1.FreeBSD.org (Postfix) with SMTP id 5A7FE43D67 for ; Wed, 15 Nov 2006 09:45:00 +0000 (GMT) (envelope-from dwmalone@maths.tcd.ie) Received: from walton.maths.tcd.ie ([134.226.81.10] helo=walton.maths.tcd.ie) by salmon.maths.tcd.ie with SMTP id ; 15 Nov 2006 09:44:59 +0000 (GMT) Date: Wed, 15 Nov 2006 09:44:59 +0000 From: David Malone To: Kris Kennaway Message-ID: <20061115094459.GA18538@walton.maths.tcd.ie> References: <20061115000551.GA93547@xor.obsecurity.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20061115000551.GA93547@xor.obsecurity.org> User-Agent: Mutt/1.5.6i Sender: dwmalone@maths.tcd.ie Cc: current@FreeBSD.org Subject: Re: ipfw breaks nfs over udp6 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Nov 2006 09:45:18 -0000 On Tue, Nov 14, 2006 at 07:05:51PM -0500, Kris Kennaway wrote: > I tried to mount nfs over udp6 from a local host, but nfs traffic > makes ipfw cry: > > ipfw: pullup failed > ipfw: pullup failed > ipfw: pullup failed > ... > > and nfs traffic is wedged. I'm guessing this is something to do with sending fragmented UDP packets. Looking at the ipfw2 code for dealing with IPv6 fragments, I think there's definitely a problem of some sort, but I can't see what the intended behaviour is yet. David.