From owner-freebsd-net@FreeBSD.ORG Thu Oct 6 08:28:29 2011 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 83E41106564A for ; Thu, 6 Oct 2011 08:28:28 +0000 (UTC) (envelope-from Bredehorn@gmx.de) Received: from mailout-de.gmx.net (mailout-de.gmx.net [213.165.64.23]) by mx1.freebsd.org (Postfix) with SMTP id CE0428FC08 for ; Thu, 6 Oct 2011 08:28:27 +0000 (UTC) Received: (qmail 31349 invoked by uid 0); 6 Oct 2011 08:28:26 -0000 Received: from 93.159.253.120 by rms-de007.v300.gmx.net with HTTP Content-Type: text/plain; charset="utf-8" Date: Thu, 06 Oct 2011 10:28:24 +0200 From: "Rainer Bredehorn" Message-ID: <20111006082824.311990@gmx.net> MIME-Version: 1.0 To: freebsd-net@freebsd.org X-Authenticated: #168415 X-Flags: 0001 X-Mailer: GMX.net Web Mailer x-registered: 0 Content-Transfer-Encoding: 8bit X-GMX-UID: xxPkfZI3eWUkRq33a29nKysjL0tsZg02 Subject: RE: IPv6 multicast listener discovery 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: Thu, 06 Oct 2011 08:28:29 -0000 > ----- Ursprüngliche Nachricht ----- > This address is for IPv6 Node Information Query, called the NI Group Address. > > > > For example, you can issue the command > > > > ping6 -w fe80::250:fcff:feb8:5443%rl0 > > > > you can get your hostname back. I see! So a node gets a multicast address for Node Information Queries. This is obviously the case when a hostname is given in the rc.conf. I would like to recalculate the lower address part. Which part of a hostname like "test1.test.de" do I have to use to calculate the MD5 hash? Do we have more from the RFC experimental stuff for IPv6 implemented in FreeBSD? Rainer.