From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269871AbTGKKdU (ORCPT ); Fri, 11 Jul 2003 06:33:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269872AbTGKKdU (ORCPT ); Fri, 11 Jul 2003 06:33:20 -0400 Received: from netcore.fi ([193.94.160.1]:54539 "EHLO netcore.fi") by vger.kernel.org with ESMTP id S269871AbTGKKdM (ORCPT ); Fri, 11 Jul 2003 06:33:12 -0400 Date: Fri, 11 Jul 2003 13:47:48 +0300 (EEST) From: Pekka Savola To: YOSHIFUJI Hideaki / =?iso-2022-jp?B?GyRCNUhGIzFRTEAbKEI=?= cc: mika.liljeberg@welho.com, , , Subject: Re: 2.4.21+ - IPv6 over IPv4 tunneling b0rked In-Reply-To: <20030711.194713.21412719.yoshfuji@linux-ipv6.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 11 Jul 2003, YOSHIFUJI Hideaki / [iso-2022-jp] 吉藤英明 wrote: > In article (at Fri, 11 Jul 2003 13:03:54 +0300 (EEST)), Pekka Savola says: > > > > We have but we cannot; it is refcnt'ed. > > > > I don't understand what you mean. Refcnt'ed by a userland process, so > > that if you'd want the subnet-router anycast address, the whole time a > > process (like radvd) should be running.. or what? > > Kernel has refcnt for subnet router anycast address. > Ref/dereference from userspace is done via socket. > You cannot derefer subnet router anycast address > from userspace if the socket hasn't refered it. So? The point is that subnet router anycast address *could* be referenced explicitly by a user-land socket (e.g. by radvd), not kernel at all. -- Pekka Savola "You each name yourselves king, yet the Netcore Oy kingdom bleeds." Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings