From owner-freebsd-net@FreeBSD.ORG Mon Nov 22 11:04:58 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 04331106566C for ; Mon, 22 Nov 2010 11:04:58 +0000 (UTC) (envelope-from siquijorphilips@gmail.com) Received: from mail-qw0-f54.google.com (mail-qw0-f54.google.com [209.85.216.54]) by mx1.freebsd.org (Postfix) with ESMTP id B1D8C8FC14 for ; Mon, 22 Nov 2010 11:04:57 +0000 (UTC) Received: by qwi4 with SMTP id 4so690585qwi.13 for ; Mon, 22 Nov 2010 03:04:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=jrd8Il948Ca4/QjKEG/urHu7rQ0nGYc4DNrHi9M/WVM=; b=xOnuWkRORMuX1nc/keIGwxa9BrHK+zOjVGMnMtZ2OoGIBuCpO/W1xRAA0uQFENqXc/ ROgK2wbeI51vG2YUD2suULiu4A+aiW+lTtBEu6gwdQr9tPFOdSyfXcDJdbm0LZ0wwSkr YswFlDqRDPoTWreRR0qYrrMswACfUafsM1afE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=fLGJCCsgS1mqYG1els2o0l5DjzrkrOPxCXT3w/yN4gwL+RLyz4j3kYUM20arpTxcIr qIsTZmCm7xcwHTqK8d39EJEp/ceOdUYZJ6XYEqgHT8fMBw8MQuVIBkiJuTM7rsIpQRKH XH6cAG+hoF9wMSrBkjlQ25VD3MgIzoH6aHmpQ= MIME-Version: 1.0 Received: by 10.229.87.13 with SMTP id u13mr4880897qcl.202.1290423897029; Mon, 22 Nov 2010 03:04:57 -0800 (PST) Received: by 10.229.32.140 with HTTP; Mon, 22 Nov 2010 03:04:56 -0800 (PST) In-Reply-To: <20101122.090147.74675296.sthaug@nethelp.no> References: <20101119.095212.74667071.sthaug@nethelp.no> <20101122.090147.74675296.sthaug@nethelp.no> Date: Mon, 22 Nov 2010 19:04:56 +0800 Message-ID: From: Siquijor Philips To: sthaug@nethelp.no Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-net@freebsd.org Subject: Re: 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: Mon, 22 Nov 2010 11:04:58 -0000 On Mon, Nov 22, 2010 at 4:01 PM, wrote: >> > I would like to get rtadvd to send RAs completely *without* a prefix >> > info option. My Juniper routers at work can do this just fine... >> >> Oh I see. I haven't tried this case with FreeBSD configuring RA with >> default route info only. So, how your Juniper router coordinate your >> DHCPv6 server to inform the hosts or nodes where to get prefix info >> since then your router wasn't configured with pinfoflags options? > > The router sends RAs with the "managed" flag, in the RA header (not > connected to any specific prefix). This tells the clients that they > should attempt DHCPv6 configuration. > >> Or >> the hosts are just configured with DHCPv6 client informing directly >> the DHCPv6 server for IPv6 address info while its default route is >> obtainable via RA through SLAAC? > > The default route and the "managed" flag come from RA. The rest from > the DHCPv6 server. > > Some of us would *like* DHCPv6 to be able to work without RA - but that > is a different (religious) discussion. > > Steinar Haug, Nethelp consulting, sthaug@nethelp.no > Thanks for the explanation Steinar, this is clear to me now. So, as what other folks have suggested, I think you can proceed with issuing a PR to this.