IETF Logo Mail Archive

Re: IPv4 traffic on "ietf-v6ONLY"

Brian E Carpenter <brian.e.carpenter@gmail.com> Wed, 15 November 2017 11:33 UTC

Return-Path: <brian.e.carpenter@gmail.com>
X-Original-To: ipv6@ietfa.amsl.com
Delivered-To: ipv6@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2ADEF124BE8 for <ipv6@ietfa.amsl.com>; Wed, 15 Nov 2017 03:33:01 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2
X-Spam-Level:
X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id F3jsJDsBbTVM for <ipv6@ietfa.amsl.com>; Wed, 15 Nov 2017 03:33:00 -0800 (PST)
Received: from mail-pf0-x22e.google.com (mail-pf0-x22e.google.com [IPv6:2607:f8b0:400e:c00::22e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id EEC231200FC for <ipv6@ietf.org>; Wed, 15 Nov 2017 03:32:59 -0800 (PST)
Received: by mail-pf0-x22e.google.com with SMTP id x7so16838114pfa.1 for <ipv6@ietf.org>; Wed, 15 Nov 2017 03:32:59 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:organization:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=JP2GG1Ma22sT2jyQDtGgOkfyiesB9p8uAEFrHW9olow=; b=XFXSgL/Mm35qxRl3TVGd+cWO/MfIohfGpHTGD2oUPwzHNsXQ7lhvT+uHfRdCV9l3nq ALNhdJI4TyMVy2+Dft65zJCk3FlE+NcxS9+P4sQdT4JxFHSDXfLv/4w/YPSouu50Xvxt iAt580KaO7PI6L6BkEa/qRc/1srx1lcbiVnHVFuFVOIb2sLqA3vpPBEYrescEit//KMZ 0P/GgAIliECiBfw3go/BiZAJJAaC8wxmFuEcUlWWOf3wQhZJ7T7kMDEKVdpi2kfhiQBq /XsVVwXSKDb9C1hncsMEiJhYRNizvvyqLIbMMPh4GN86FpRWmZLgBJvA5mn28OlAjOVR q0ug==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:organization :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=JP2GG1Ma22sT2jyQDtGgOkfyiesB9p8uAEFrHW9olow=; b=aW00IWkBIqLNfKkamIOvBo3VgZ5L8loejXdqVDM4l63H99KOH2KsCs+h/IfbLb3p7w hbpiQy8M8tUhp8CtodODY+rlK/ewiVSXuyNP7twQG1s5mUubizKTeoZm7u3PNGxd+pz7 0YNLUaW2oFQkr4EUnYAmQh2rEwXR4AxEOJ5MpDZTvEAxzTm4EWHYgrbZXMEszcAVpfce uBIn6FnFM0foNiYvG0k5bGf/wsfd7kiO1s3jIMWoOXlZAE/U2ZD9Ud0FVEM9GmojG2UO X2A/fcpZsGQhlxCKC/SvI5pdqKssRP+1h9aAMAwEBRP1K3NQnlcAsQcxL5LZ/MSEAqNb bCSw==
X-Gm-Message-State: AJaThX7sfgQl4R7zXcECgiDb6Sxi5yjUeKzX1JABrQ+oijfgVLag6VPn QF1jRhBZdEPZTV7J++xotB0fuw==
X-Google-Smtp-Source: AGs4zMbKeQAmuJrITmI9XFWuGnW6jflWOqMi+7KZmZAksdZAsVUYH1j3IV+fEUYu4xPtanwQjI6TxA==
X-Received: by 10.159.207.143 with SMTP id z15mr15204168plo.159.1510745579317; Wed, 15 Nov 2017 03:32:59 -0800 (PST)
Received: from ?IPv6:2001:67c:370:1998:28cc:dc4c:9703:6781? ([2001:67c:370:1998:28cc:dc4c:9703:6781]) by smtp.gmail.com with ESMTPSA id s6sm34197715pgq.57.2017.11.15.03.32.56 for <ipv6@ietf.org> (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 15 Nov 2017 03:32:58 -0800 (PST)
Subject: Re: IPv4 traffic on "ietf-v6ONLY"
To: ipv6@ietf.org
References: <f9805855-68cf-a3e8-a13f-c6ac31b09058@gmail.com> <bbd4e1d2-047f-6758-76f8-fd591c51dad7@gmail.com> <D631CE54.8C0F5%lee@asgard.org> <m1eEvEP-0000G3C@stereo.hq.phicoh.net> <5655992F-737A-4223-A917-63CAD6DF7A1D@cisco.com> <m1eEvku-0000F7C@stereo.hq.phicoh.net>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
Message-ID: <232a0572-a804-fccf-7278-e70671a50df9@gmail.com>
Date: Thu, 16 Nov 2017 00:32:58 +1300
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0
MIME-Version: 1.0
In-Reply-To: <m1eEvku-0000F7C@stereo.hq.phicoh.net>
Content-Type: text/plain; charset="utf-8"
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/hpIjiow6DaA0eZnO2V8nY_Ws2eg>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: "IPv6 Maintenance Working Group \(6man\)" <ipv6.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ipv6>, <mailto:ipv6-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/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>
X-List-Received-Date: Wed, 15 Nov 2017 11:33:01 -0000

On 16/11/2017 00:21, Philip Homburg wrote:
>>     Perhaps, define a DHCPv6 option to convey v6-only, for which
>>     the client interpretation should be to suppress v4.  Although
>>    this will be at the cross road with allowing client's wishes to
>>    use v4 LL for whatever useless/useful traffic, it would be a
>>    reasonable deployment policy to enforce.
> 
> The problem with a DHCPv6 option is that an IPv4-only network may not be
> prepared to defend against rogue DHCPv6 servers.

A bigger problem is that not all networks/hosts support DHCPv6. It needs
to be an RA option if you want everybody to see it.

    Brian

v2.23.0 | Report a Bug | By Email