IETF Logo Mail Archive

Re: [v6ops] Scope of Unique Local IPv6 Unicast Addresses (Fwd: New Version Notification for draft-gont-6man-ipv6-ula-scope-00.txt)

Brian E Carpenter <brian.e.carpenter@gmail.com> Sat, 13 February 2021 21:17 UTC

Return-Path: <brian.e.carpenter@gmail.com>
X-Original-To: v6ops@ietfa.amsl.com
Delivered-To: v6ops@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9FB383A0DFC; Sat, 13 Feb 2021 13:17:48 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.099
X-Spam-Level:
X-Spam-Status: No, score=-2.099 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, NICE_REPLY_A=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=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 jVy4Cd54k9ik; Sat, 13 Feb 2021 13:17:47 -0800 (PST)
Received: from mail-pg1-x52a.google.com (mail-pg1-x52a.google.com [IPv6:2607:f8b0:4864:20::52a]) (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 3EE783A0C61; Sat, 13 Feb 2021 13:17:47 -0800 (PST)
Received: by mail-pg1-x52a.google.com with SMTP id t26so1956244pgv.3; Sat, 13 Feb 2021 13:17:47 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=Kq/ePbyAMDGV86jmtSG6ycYg9g4LlK1i+tfm2z2lS2k=; b=DM5CW7aZph4l+amMwDU8kf51Qglw2ARDXHlm0aFY2o9EiBpCFUGZMY4LLq8xSMCdFb 3W9l0tuBkETjbzG2XmoMm4vKFzzOZqd6TCby+ttGEke4pyIv54uF1qrhbbdMAj1rBGIJ 2S/EzXohH/rrhSQ28OQQX8yJz0VJ7t5zrlAAdFJxnSHwxbSxE1Oz628CwIWuWY6qPYL9 x6JuwipVU2br76mf32rmLn++4ikEjSKu9PSDYWqVKUUfDrdF4eWooafkxJVa6wl4WJXF CaymE/YOURKHzY+sIKAorqHi5rmJlUPb7Zy48d2WV7plTV40RBNeVzS8o/eoATWHFj08 F7Sw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=Kq/ePbyAMDGV86jmtSG6ycYg9g4LlK1i+tfm2z2lS2k=; b=J2Omkp4EQYc6m4taZvAvqDREtK6qf5She92RWEwLqh0Rpw6P+8bQvn/BzMmEDEuwqT GKEz2FDuaae6iJTL9EWoeJ3gq4+oUPagU0q8sAbUJfYntubtv31wgtiquB35yLWwl0R9 6zIfPuqREFHb5AyoJizIWdwiGin7/rsSG4w7LqcPC+AlGK+zNbF571Kvdae540eqNmCs de2mE/msTq4Lihgbv8XANDnhANajlxy7/HM5Nb5BuYbRll3EfDY8qGcMdpSGP9q17/Nm 5ados24OuBZO5LWyaeHwDLX8YI2VbW0sbfljTfn+C7xEwRlIUr2obwQkwMlDqCCPfH/J FlyA==
X-Gm-Message-State: AOAM530ITqXJQQt0yA3LxhPgAtQ4rv0EZHwqPDtU5K6BgAP4PYeykUxY tNbwp56IwvovEwu1I3puob8H0v+qQR13aA==
X-Google-Smtp-Source: ABdhPJz6bes/7Xiv043plGlOGBNgrt11Jaohh8kv4wQ1OPdqmRikl6/nITU4LEgI5/moWIXrCUKF2A==
X-Received: by 2002:a63:c10f:: with SMTP id w15mr8671104pgf.99.1613251066339; Sat, 13 Feb 2021 13:17:46 -0800 (PST)
Received: from [192.168.178.20] ([151.210.131.28]) by smtp.gmail.com with ESMTPSA id h12sm12894228pgs.7.2021.02.13.13.17.43 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 13 Feb 2021 13:17:45 -0800 (PST)
To: Fernando Gont <fgont@si6networks.com>, David Farmer <farmer@umn.edu>, Fred Baker <fredbaker.ietf@gmail.com>
Cc: IPv6 Operations <v6ops@ietf.org>, "6man@ietf.org" <6man@ietf.org>
References: <160989494094.6024.7402128068704112703@ietfa.amsl.com> <6fe3a45e-de65-9f88-808d-ea7e2abdcd16@si6networks.com> <F4E00812-E366-4520-AE17-7BB46E28D575@gmail.com> <CAN-Dau3iOjjU+FLpdtA7nqfKRX+sjjSanAU8U-O3pH-k5nSoig@mail.gmail.com> <a3fbfb94-90ae-961c-a2ab-33ade27e074e@si6networks.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Message-ID: <672bd5e6-bdce-5915-1082-1ed30d3c5980@gmail.com>
Date: Sun, 14 Feb 2021 10:17:40 +1300
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.1
MIME-Version: 1.0
In-Reply-To: <a3fbfb94-90ae-961c-a2ab-33ade27e074e@si6networks.com>
Content-Type: text/plain; charset="utf-8"
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/v6ops/QQ7P4Yct51e-T5TsxdUkTm-byho>
Subject: Re: [v6ops] Scope of Unique Local IPv6 Unicast Addresses (Fwd: New Version Notification for draft-gont-6man-ipv6-ula-scope-00.txt)
X-BeenThere: v6ops@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: v6ops discussion list <v6ops.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/v6ops>, <mailto:v6ops-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/v6ops/>
List-Post: <mailto:v6ops@ietf.org>
List-Help: <mailto:v6ops-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/v6ops>, <mailto:v6ops-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 13 Feb 2021 21:17:49 -0000

On 13-Feb-21 22:19, Fernando Gont wrote:
...
> Well, whether we call it out or not, as per RFC4007:
> 
>                scope(LL) < scope(ULA) < scope(GUA)

And there's the fallacy. This inequality only makes sense if reachability is strictly a matter of concentric circles. It isn't. Nice math, but not reality.

Slide 4 of https://www.cs.auckland.ac.nz/~brian/scope6.pdf

   Brian

v2.23.0 | Report a Bug | By Email