IETF Logo Mail Archive

Re: Confirmation to advance: draft-ietf-6man-ipv6only-flag-05

Lorenzo Colitti <lorenzo@google.com> Wed, 08 May 2019 23:50 UTC

Return-Path: <lorenzo@google.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 085411201A2 for <ipv6@ietfa.amsl.com>; Wed, 8 May 2019 16:50:26 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -17.51
X-Spam-Level:
X-Spam-Status: No, score=-17.51 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, ENV_AND_HDR_SPF_MATCH=-0.5, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, T_DKIMWL_WL_MED=-0.01, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_DEF_SPF_WL=-7.5] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=google.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 OenXHJruaTUk for <ipv6@ietfa.amsl.com>; Wed, 8 May 2019 16:50:22 -0700 (PDT)
Received: from mail-wr1-x42f.google.com (mail-wr1-x42f.google.com [IPv6:2a00:1450:4864:20::42f]) (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 31767120045 for <ipv6@ietf.org>; Wed, 8 May 2019 16:50:22 -0700 (PDT)
Received: by mail-wr1-x42f.google.com with SMTP id v11so272581wru.5 for <ipv6@ietf.org>; Wed, 08 May 2019 16:50:22 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=gAzX5HpdLc4zRdxySWJY+KQy1aJgCHwkHkln7tBx9u8=; b=HMDEChQgDddInVy7Pjm+vL/W4dHo/BgdFCjz3Q9QHqzuS2IR7mmdoqZpIuBHB6r8Zn +3fkshvgEU7nhZKq3yNtiz3beuREDjZ6HWBZe10nrX1MT4pFO890eMEgN5MVSQjNhi/l ihsM25YuISW1GOfHS/4k4LyhqctC200YR8DJBTQB+oxCKEVnN3U+hjb/YOMPnqI8X2QC Hvp9/PdSMzTfiQTVUpJ7ZtAzPcCVJrwkUZ0GJU3MSt+vRQQ7GRZ++ZfBK84UYB/jpfkV oFU+Kr5h4Y1gq/iTM7fn/w4TXBJYM9GpOrEYc6h3pm6hw7FxsXiiJ8RNF7nhGKjv3TM7 wbwA==
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=gAzX5HpdLc4zRdxySWJY+KQy1aJgCHwkHkln7tBx9u8=; b=RrNDZRr9XYpi2nSiIicfLLDw87OQca5FIq/q/tOk0dTao93THeyKnJirvEolGXrr5v IcN0W//GN2drriZ8L+dVpV6PdxbO7e+FWpJPsome6uweXeNDYpq9OnY0Nc42EEHYfH6k D33/cWUhKpfm5wSHyVUQkGEUhsxq3myIbXSe8QxHMy4UTHxJ+jf9pu7EdFlaPvL8c1Hu 6Baxt5QQE2SiHGThFpxRO7zpW2PfM6TS8k5dV9ihDLZ2mzYgKQPRFHmdGopQlVd/aMM2 1VLAJeOqY8LAlkob1FnJVWGlzxcdpwOjpTPlwka1ZixSowhJIyio0R7T5lMC+mOeNK4i XGZg==
X-Gm-Message-State: APjAAAWBfbjuVczklO27DLa3gh+iacWAvTJGLarJgFc8rRbOO0xYMfss 8yojq7ug5oCa9Pc1c4yf58GS+s2Gz11NcGGTV5lwIg==
X-Google-Smtp-Source: APXvYqzJ/Fchf8sijJJu+t77rhJF6/M/AXf9x8JvaO6LM4xDwUQVrLOOZ6iafwsFFjFvwKNdcqgdggw/O+XnCG0erbo=
X-Received: by 2002:adf:9f4a:: with SMTP id f10mr425147wrg.13.1557359420172; Wed, 08 May 2019 16:50:20 -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> <51F2BD2A-A590-4AF1-B8C1-FE62C9416340@steffann.nl> <8C63324F-FEF6-40BD-B918-B413CDEF9186@gmail.com> <478d5dc5-af00-4ab0-d8ef-75e41cd501d4@foobar.org> <CAKD1Yr1OcQqxv1Z5XA7OBMfyC7kayXUOLJEGvY8QVu0XB-H=Xw@mail.gmail.com> <17174.1557343049@localhost>
In-Reply-To: <17174.1557343049@localhost>
From: Lorenzo Colitti <lorenzo@google.com>
Date: Thu, 09 May 2019 08:50:06 +0900
Message-ID: <CAKD1Yr0LMbqmS_C0y0K8m3mm0MTTon8FqsHp_chNTHYh-zWCQA@mail.gmail.com>
Subject: Re: Confirmation to advance: draft-ietf-6man-ipv6only-flag-05
To: Michael Richardson <mcr+ietf@sandelman.ca>
Cc: IPv6 List <ipv6@ietf.org>
Content-Type: multipart/alternative; boundary="0000000000000732ba058868ffb9"
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/kFyIs4iLAtxgzQH7hIIiuhakTvo>
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, 08 May 2019 23:50:26 -0000

>
>     > On such a network, the flag provides a good way to tell the host: we
>     > don't support IPv4 on this network. The host can trust that or not.
> If
>     > it does, it can save battery power for its users and reduce airtime
>     > impact by disabling DHCPv4 or retransmitting DHCPv4 less frequently,
>     > disabling features like IPv4 MDNS, etc. etc.
>
> Does this mean you'll be implementing?
>

Well, nobody can implement a flag that doesn't exist. if the flag did
exist, I think it would make sense to implement it. The most obvious thing
to do with it would be to reduce the DHCP  client exponential backoff or
perhaps even give up on DHCP altogether if it did not succeed within a
given timeout.

v2.23.0 | Report a Bug | By Email