[NDP] Router autoconfiguration with RS/RA

"Silviu VLASCEANU" <silviu.vlasceanu@gmail.com> Fri, 06 June 2008 12:28 UTC

Return-Path: <ipv6-bounces@ietf.org>
X-Original-To: ipv6-archive@megatron.ietf.org
Delivered-To: ietfarch-ipv6-archive@core3.amsl.com
Received: from [127.0.0.1] (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 0CE303A69C5; Fri, 6 Jun 2008 05:28:45 -0700 (PDT)
X-Original-To: ipv6@core3.amsl.com
Delivered-To: ipv6@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 675073A69C5 for <ipv6@core3.amsl.com>; Fri, 6 Jun 2008 05:28:43 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.598
X-Spam-Level:
X-Spam-Status: No, score=-2.598 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, HTML_MESSAGE=0.001]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GcM7IZblKnUO for <ipv6@core3.amsl.com>; Fri, 6 Jun 2008 05:28:42 -0700 (PDT)
Received: from wf-out-1314.google.com (wf-out-1314.google.com [209.85.200.173]) by core3.amsl.com (Postfix) with ESMTP id 914913A686D for <ipv6@ietf.org>; Fri, 6 Jun 2008 05:28:42 -0700 (PDT)
Received: by wf-out-1314.google.com with SMTP id 27so1008977wfd.31 for <ipv6@ietf.org>; Fri, 06 Jun 2008 05:28:52 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:sender :to:subject:mime-version:content-type:x-google-sender-auth; bh=fuTb5NPNViJeU6/Sx8ipo8a0YYJXbZmL6B7D0PHsiXs=; b=OnbNvJOKm9D4ZLJehgRlU21s94RuT/OzAIKqidCLyeZmeeAV+9nwZJMYmpKxkn74tt CQDN6iH8I5A3h/hzbBd/e09P0BvKeJiNQIFGE08OjIr/GJ85pTZ56nCvWUnqPnCWR4u/ aVPd4bTFzCYFV/vu/KPnRx7NnUt3soTvWVQBc=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:mime-version:content-type :x-google-sender-auth; b=GU+f9sF0wd32gokqculfafcUs5gTaI7A3qPLaxBbbCzy3H2lZGEhDqK2Jk09nbIXUN SGK6gEuNXa7VAc7z++59ww+wmmbuLQSHptV3EFfKUDeGWkEvBkxTZ9FTztofClSyWP+x b1HuHXjmimllXvkdlWTawfmP0Y13z4Wx1kxQU=
Received: by 10.142.201.3 with SMTP id y3mr1074198wff.120.1212755331749; Fri, 06 Jun 2008 05:28:51 -0700 (PDT)
Received: by 10.142.135.4 with HTTP; Fri, 6 Jun 2008 05:28:51 -0700 (PDT)
Message-ID: <3a44f430806060528o3ab46c73k863537e53e62275b@mail.gmail.com>
Date: Fri, 06 Jun 2008 14:28:51 +0200
From: Silviu VLASCEANU <silviu.vlasceanu@gmail.com>
To: ipv6@ietf.org
Subject: [NDP] Router autoconfiguration with RS/RA
MIME-Version: 1.0
X-Google-Sender-Auth: aa55efa36b41e97f
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: "IPv6 Maintenance Working Group \(6man\)" <ipv6.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/ipv6>, <mailto:ipv6-request@ietf.org?subject=unsubscribe>
List-Archive: <https://www.ietf.org/mailman/private/ipv6>
List-Post: <mailto:ipv6@ietf.org>
List-Help: <mailto:ipv6-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ipv6>, <mailto:ipv6-request@ietf.org?subject=subscribe>
Content-Type: multipart/mixed; boundary="===============0107212565=="
Sender: ipv6-bounces@ietf.org
Errors-To: ipv6-bounces@ietf.org

Hello,

I have been trying to figure out a response for the following questions, but
I have only suppositions and I haven't found (yet) a document that
accurately talks about. So I am asking here.

Why wouldn't a router be authorized to send Router Sollicitation messages?
Moreover, why couldn't a router autoconfigure its egress interface based on
Router Advertisements received on this interface? The same question for
autoconfiguring the prefix it advertises on its subnets.

The only answer that comes in my mind is because an attack over these
messages could render not only a host unreachable, but maybe a whole subnet.
But apart this, is there really any other reason for not allowing this?

Thank you in advance for the answers.

Best regards,
-- 
Silviu
--------------------------------------------------------------------
IETF IPv6 working group mailing list
ipv6@ietf.org
Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
--------------------------------------------------------------------