Re: Alternatives to the flag (Was:Confirmation to advance: draft-ietf-6man-ipv6only-flag-05)

David Farmer <farmer@umn.edu> Wed, 15 May 2019 14:18 UTC

Return-Path: <farmer@umn.edu>
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 4008812007C for <ipv6@ietfa.amsl.com>; Wed, 15 May 2019 07:18:40 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.3
X-Spam-Level:
X-Spam-Status: No, score=-4.3 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=umn.edu
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 EC9_zp87yZ7a for <ipv6@ietfa.amsl.com>; Wed, 15 May 2019 07:18:38 -0700 (PDT)
Received: from mta-p6.oit.umn.edu (mta-p6.oit.umn.edu [134.84.196.206]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A354112008C for <ipv6@ietf.org>; Wed, 15 May 2019 07:18:38 -0700 (PDT)
Received: from localhost (unknown [127.0.0.1]) by mta-p6.oit.umn.edu (Postfix) with ESMTP id EBEA7543 for <ipv6@ietf.org>; Wed, 15 May 2019 14:18:37 +0000 (UTC)
X-Virus-Scanned: amavisd-new at umn.edu
Received: from mta-p6.oit.umn.edu ([127.0.0.1]) by localhost (mta-p6.oit.umn.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id t71WcOM8m7RB for <ipv6@ietf.org>; Wed, 15 May 2019 09:18:37 -0500 (CDT)
Received: from mail-vk1-f198.google.com (mail-vk1-f198.google.com [209.85.221.198]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mta-p6.oit.umn.edu (Postfix) with ESMTPS id AE3C7645 for <ipv6@ietf.org>; Wed, 15 May 2019 09:18:37 -0500 (CDT)
Received: by mail-vk1-f198.google.com with SMTP id y19so1036087vky.4 for <ipv6@ietf.org>; Wed, 15 May 2019 07:18:37 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=umn.edu; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=gXKH78cTY+oZYQ0q9jANFFBL0MjF3TtGMIZwZPPVYrY=; b=XB3GRDj+riPsVBXbuZ/pe/AmmztuzYb8igXS+ov9QZ6cRxNydlUzJEk15ia0Biud6O am+FMgVLJ0Wn4ASQ2Pxsxb7IC0WAkdJj942tiwkPrysq7Qic2AeiY0jrwgNjIdxTR5Kn GkMGQ/H1RAjxreCu28dgu8X/zA9fi5tWX5fSl1/UhedSKP6jQxAQiTWH3lA3b7R7zLCY JasVZmHVt2gxcZ3clxe6nuhbUbhpL2912U86Cp5eJEbh1PrrvlxagLC5WCV/rfGaOxvE veUnGaVK6FjTcj3dFEAcv4sMNgXMTyfe1pFew5Edch8CoWD2iJzUV4DFsEcqSG3YdLSx QfbA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=gXKH78cTY+oZYQ0q9jANFFBL0MjF3TtGMIZwZPPVYrY=; b=RGempa5xTlZ6QKpDmMah/IGO5GERe95crL3B7I49X6OePlha+/9OSdhhechWdl88ay +zCxhy75IM5DrDsmw3oSioScd8pM3uPw7SBc666BfckGAjszyW8osk38ZUEWVdOO+ln9 xmobae0ElDxnKCjWoQD+DTgT0sbQVyo5ZH74kYTNQzxpn4m2CCTMNHNzUslixuK/tcTL aSlvgo9Ptu5HRVvDfewV6tcjxutTpFzZ0UCzjl1CFBgPhoMTrqMZt7XjTlAW4KSW3/Qj RkovPDwaFgGKVamAiLPMXU0TTztM/FZiB/GmY1Ye/PsG6XolTtRH7a+KhJQ/9F0FOSlz ahEw==
X-Gm-Message-State: APjAAAWOIWUYlPvlc5OAH++/cwaI0KhAWDVYYWnl4Qau7RUNDZc/kmbe 0ghoSIT2e33kaHVLWYKx1WIA5Lxe1gZ8M2+KPiSgOsS8H79QKtNCDRcZAzJOtVOBfRmyuVyRcYs OSywQP2gNIdLRCcUWb0x6fD2b
X-Received: by 2002:a1f:104d:: with SMTP id g74mr18383537vki.1.1557929916724; Wed, 15 May 2019 07:18:36 -0700 (PDT)
X-Google-Smtp-Source: APXvYqytWw+TRe9luemX578k6A1t23B0hULmCed8pnGV1JeclO/sTYihyHbso710+U1L00G4UwFsrSSPnRw2ZIsg4C4=
X-Received: by 2002:a1f:104d:: with SMTP id g74mr18383512vki.1.1557929916225; Wed, 15 May 2019 07:18:36 -0700 (PDT)
MIME-Version: 1.0
References: <F8BFFCAD-E58E-4736-8A1C-56579B6F6032@employees.org> <a2465e81-a17f-ab48-efda-20fe12a70077@foobar.org> <30239E0C-C444-4A7E-8342-AEE47BF8A2BB@employees.org> <20190505200449.GB7546@vurt.meerval.net> <80073906-c3c0-1f22-9e7f-c2b349063936@gmail.com> <CAO42Z2xzVW3m0mN7jEn8SYyYCYhrufVnkfp3rBjJcijBkvucNQ@mail.gmail.com> <CACWOCC-35yVYXSRR0sRL-MBMHyOFZtJx9E9h14G8qqVh5T7qGA@mail.gmail.com> <232c1a43-0fd9-4eae-737b-260a3906f72a@gmail.com> <663F6C0B-7B8A-4088-B9C0-B2867B0C3EB8@gmail.com> <CAN-Dau3VJN7qNHAW-yStMrDRCa4vsDs2ObkAxswnYbcHde2t_w@mail.gmail.com> <m1hPqHO-0000J8C@stereo.hq.phicoh.net> <CAN-Dau3R=4JbcbK7tWkJKYzVjq7DvAAEjVsbCLbZdYYO8OJ0YA@mail.gmail.com> <m1hQ7Dm-0000M3C@stereo.hq.phicoh.net> <CAN-Dau040j6U+1CCn0QJiVMy2nVShHqqSFdCkM-FbMAH-2wjRA@mail.gmail.com> <m1hQCYr-0000KBC@stereo.hq.phicoh.net> <CAN-Dau3Lcv3qTBVtig36RfbQKuGpoqdTLfrM=eWfYxCCQRy5Sw@mail.gmail.com> <m1hQfSy-0000LTC@stereo.hq.phicoh.net> <CAN-Dau3akjaZ-j16ucOY=-d0nabG4ZdFs6wrSD4EGr3NEh9Wsw@mail.gmail.com> <a646a186-be05-cdff-c8e4-61cf09930494@foobar.org>
In-Reply-To: <a646a186-be05-cdff-c8e4-61cf09930494@foobar.org>
From: David Farmer <farmer@umn.edu>
Date: Wed, 15 May 2019 09:18:20 -0500
Message-ID: <CAN-Dau0rruxax30cU_SbAMZoOn0w97_d3Gei=4j6PzPOkzMj+w@mail.gmail.com>
Subject: Re: Alternatives to the flag (Was:Confirmation to advance: draft-ietf-6man-ipv6only-flag-05)
To: Nick Hilliard <nick@foobar.org>
Cc: Philip Homburg <pch-ipv6-ietf-6@u-1.phicoh.com>, 6man WG <ipv6@ietf.org>
Content-Type: multipart/alternative; boundary="0000000000003deea30588edd350"
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/iU_d8eLIMXMtcAUtoB857VaqOTo>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.29
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 May 2019 14:18:40 -0000

On Wed, May 15, 2019 at 9:09 AM Nick Hilliard <nick@foobar.org> wrote:

> David Farmer wrote on 15/05/2019 14:27:
> > So, I'm not willing to drop what I think is a viable solution to the
> > problem unless other stakeholders are willing to buy into this kind of
> > change. In particular, I'm thinking the people maintaining mDNS in dnssd
> > wg. I can't see making the change proposed above without their buy-in.
> [...]
> > So I think we either need the flag or disable RFC 3927 by default on
> > dual-stack hosts.
>
> RFC 2563 already specifies a protocol to turn off ipv4 LLs.
>

Yes, but that is incompatible with link layer filtering of at least
Ethertypes 0x0800 you could probably still filter 0x0806.


> Nick
>


-- 
===============================================
David Farmer               Email:farmer@umn.edu
Networking & Telecommunication Services
Office of Information Technology
University of Minnesota
2218 University Ave SE        Phone: 612-626-0815
Minneapolis, MN 55414-3029   Cell: 612-812-9952
===============================================