From owner-freebsd-net@FreeBSD.ORG Sun Aug 29 00:02:24 2010 Return-Path: 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 40B32106564A; Sun, 29 Aug 2010 00:02:24 +0000 (UTC) (envelope-from ticso@cicely7.cicely.de) Received: from raven.bwct.de (raven.bwct.de [85.159.14.73]) by mx1.freebsd.org (Postfix) with ESMTP id A60588FC0C; Sun, 29 Aug 2010 00:02:23 +0000 (UTC) Received: from mail.cicely.de ([10.1.1.37]) by raven.bwct.de (8.13.4/8.13.4) with ESMTP id o7T02LPZ008604 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Sun, 29 Aug 2010 02:02:22 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (cicely7.cicely.de [10.1.1.9]) by mail.cicely.de (8.14.4/8.14.4) with ESMTP id o7T02JsK001980 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 29 Aug 2010 02:02:19 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (localhost [127.0.0.1]) by cicely7.cicely.de (8.14.2/8.14.2) with ESMTP id o7T02J4R006081; Sun, 29 Aug 2010 02:02:19 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: (from ticso@localhost) by cicely7.cicely.de (8.14.2/8.14.2/Submit) id o7T02JLc006080; Sun, 29 Aug 2010 02:02:19 +0200 (CEST) (envelope-from ticso) Date: Sun, 29 Aug 2010 02:02:19 +0200 From: Bernd Walter To: Doug Barton Message-ID: <20100829000218.GI82417@cicely7.cicely.de> References: <20100828220844.GE82417@cicely7.cicely.de> <4C798CC4.1060904@FreeBSD.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4C798CC4.1060904@FreeBSD.org> X-Operating-System: FreeBSD cicely7.cicely.de 7.0-STABLE i386 User-Agent: Mutt/1.5.11 X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED=-1, BAYES_00=-1.9, T_RP_MATCHES_RCVD=-0.01 autolearn=ham version=3.3.0 X-Spam-Checker-Version: SpamAssassin 3.3.0 (2010-01-18) on spamd.cicely.de Cc: freebsd-net@FreeBSD.org, Bernd Walter , ticso@cicely.de Subject: Re: Problem with link-local addresses on USB interfaces X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ticso@cicely.de List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 29 Aug 2010 00:02:24 -0000 On Sat, Aug 28, 2010 at 03:25:08PM -0700, Doug Barton wrote: > On 8/28/2010 3:08 PM, Bernd Walter wrote: > >Only the PCI and loopback interface responds to their own link local > >address. > > > >I'm also puzzled about what I need to configure on an interface > >to get an link-local address. > >I've finally put ifconfig_ue0/1="UP" into rc.conf. > > You haven't said what version of FreeBSD you're using, but I'm assuming > -current. The security officer asked to have the default changed so that > link-local addresses are not accessible by default. I implemented a > version of this such that the interface comes up with "ifdisabled" by > default, which prevents all IPv6 traffic, but does not prevent you from > configuring the interface. Ah - Ok - quite unexpected after ~10 years IPv6 on FreeBSD. But now everything looks fine. > You can read in the ifconfig man page how to clear that flag, which will > allow traffic to flow. There are also examples in /etc/defaults/rc.conf > that demonstrate how to set up an ifconfig line to do nothing but > establish a link-local if that's how you want the interface to be > configured. Thank you for the quick response. -- B.Walter http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.