From owner-freebsd-net@FreeBSD.ORG Wed Nov 10 11:53:38 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 7708B1065670 for ; Wed, 10 Nov 2010 11:53:38 +0000 (UTC) (envelope-from sthaug@nethelp.no) Received: from bizet.nethelp.no (bizet.nethelp.no [195.1.209.33]) by mx1.freebsd.org (Postfix) with SMTP id AD99E8FC1F for ; Wed, 10 Nov 2010 11:53:37 +0000 (UTC) Received: (qmail 53807 invoked from network); 10 Nov 2010 11:53:34 -0000 Received: from bizet.nethelp.no (HELO localhost) (195.1.209.33) by bizet.nethelp.no with SMTP; 10 Nov 2010 11:53:34 -0000 Date: Wed, 10 Nov 2010 12:53:34 +0100 (CET) Message-Id: <20101110.125334.41669215.sthaug@nethelp.no> To: freebsd-net@freebsd.org From: sthaug@nethelp.no X-Mailer: Mew version 3.3 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: How to generate IPv6 RA without any prefixes? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Nov 2010 11:53:38 -0000 In IPv6 it should be possible to generate a Router Advertisement which contains no prefix options (the idea being that I want the host to populate its default router list but nothing else). However, I cannot seem to get rtadvd to do this. If I start rtadvd with no /etc/rtadvd.conf file, it sends RAs with a prefix option corresponding to the IPv6 address of the interface. In the /etc/rtadvd.conf I can explicitly specify prefixes ("addr"), but I can't find any way to specify that no prefix options should be sent. Any suggestions? Steinar Haug, Nethelp consulting, sthaug@nethelp.no