From owner-freebsd-net@FreeBSD.ORG  Thu Jan  5 15:38:01 2012
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
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 188811065670
	for <freebsd-net@freebsd.org>; Thu,  5 Jan 2012 15:38:01 +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 ADAB78FC13
	for <freebsd-net@freebsd.org>; Thu,  5 Jan 2012 15:38:00 +0000 (UTC)
Received: (qmail 2258 invoked by uid 0); 5 Jan 2012 15:11:19 -0000
Received: from 93.159.253.120 by rms-de006.v300.gmx.net with HTTP
Content-Type: text/plain; charset="utf-8"
Date: Thu, 05 Jan 2012 16:11:17 +0100
From: "Rainer Bredehorn" <Bredehorn@gmx.de>
Message-ID: <20120105151117.209350@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: wth3b6MweSEqVr7yaXQhtpl+IGRvbwDH
Subject: IPv6 multicast routes with  interface local scope
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 05 Jan 2012 15:38:01 -0000

HI!

FreeBSD 8 uses a strange notation for multicast routes with interface local scope something like:
ff01:3::/32
Here '3' is the scope id of the interface.

OpenBSD uses the same notation as proposed in RFC 4007 for link local scompe multicast addresses:
ff01::%fxp1:/32

Why does FreeBSD use a different notation?

Rainer.