Re: Last Call: <draft-ietf-6man-rfc2460bis-08.txt> (Internet Protocol, Version 6 (IPv6) Specification) to Internet Standard

Sander Steffann <sander@steffann.nl> Sun, 26 February 2017 13:24 UTC

Return-Path: <sander@steffann.nl>
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 27B721298A6; Sun, 26 Feb 2017 05:24:43 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -0.101
X-Spam-Level:
X-Spam-Status: No, score=-0.101 tagged_above=-999 required=5 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=steffann.nl
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 WEJ4rMcw8-sY; Sun, 26 Feb 2017 05:24:41 -0800 (PST)
Received: from mail.sintact.nl (mail.sintact.nl [IPv6:2001:9e0:803::6]) (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 A0E8F1297C6; Sun, 26 Feb 2017 05:24:41 -0800 (PST)
Received: from localhost (localhost [127.0.0.1]) by mail.sintact.nl (Postfix) with ESMTP id 5397A4A; Sun, 26 Feb 2017 14:24:39 +0100 (CET)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=steffann.nl; h= x-mailer:references:message-id:date:date:in-reply-to:from:from :subject:subject:mime-version:content-type:content-type:received :received; s=mail; t=1488115476; bh=Ta7z8J1Vrp2oJ1lJlScM2UFJL4wa IP83Cj9fHmvdiV0=; b=pggjwRX+Nr49tFlppdUSl3ea1Pn3fBD5lNYad67eIg0c 5CcBPFX0WVZCbefGolI8Dj3bUp3/zBi3KjJk/GuhyrMqb1eK9ZyaE3J7mEICHY/H JS/LJO+FJlpqghQCp7peWAx0uf7QjAoO+w2QbL/zG3Bk65VeHd/W2b0TIpDeh8E=
X-Virus-Scanned: Debian amavisd-new at mail.sintact.nl
Received: from mail.sintact.nl ([127.0.0.1]) by localhost (mail.sintact.nl [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id GDTSkzhrSuZm; Sun, 26 Feb 2017 14:24:36 +0100 (CET)
Received: from [IPv6:2a02:a213:a300:9300:1185:211f:5b63:5677] (unknown [IPv6:2a02:a213:a300:9300:1185:211f:5b63:5677]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mail.sintact.nl (Postfix) with ESMTPSA id D02EE49; Sun, 26 Feb 2017 14:24:35 +0100 (CET)
Content-Type: multipart/signed; boundary="Apple-Mail=_47669190-2FD0-4B0B-B635-FBACDCB6232E"; protocol="application/pgp-signature"; micalg=pgp-sha256
Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\))
Subject: Re: Last Call: <draft-ietf-6man-rfc2460bis-08.txt> (Internet Protocol, Version 6 (IPv6) Specification) to Internet Standard
X-Clacks-Overhead: GNU Terry Pratchett
From: Sander Steffann <sander@steffann.nl>
In-Reply-To: <456cf6e5-a57b-8198-4261-1ff2c0dc1e1c@si6networks.com>
Date: Sun, 26 Feb 2017 14:24:35 +0100
Message-Id: <86D1EAA4-237B-46E0-A766-E2D181250695@steffann.nl>
References: <148599296506.18647.12389618334616420462.idtracker@ietfa.amsl.com> <6dbbbf7d-b3b8-0fbc-c2a3-546472925893@si6networks.com> <9B712605-E180-4F33-806F-9DC5CBAD2E31@steffann.nl> <456cf6e5-a57b-8198-4261-1ff2c0dc1e1c@si6networks.com>
To: Fernando Gont <fgont@si6networks.com>
X-Mailer: Apple Mail (2.3124)
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/W75SM3BRtyjzErpXi0qYhHh7qDw>
Cc: draft-ietf-6man-rfc2460bis@ietf.org, 6man WG <ipv6@ietf.org>, ietf <ietf@ietf.org>, suresh.krishnan@ericsson.com, 6man-chairs@ietf.org
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.17
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: Sun, 26 Feb 2017 13:24:43 -0000

> Op 26 feb. 2017, om 14:05 heeft Fernando Gont <fgont@si6networks.com>; het volgende geschreven:
> 
> On 02/26/2017 09:55 AM, Sander Steffann wrote:
>> Hi,
>> 
>>> 2.3.  Address Type Identification
>>> 
>>>  The type of an IPv6 address is identified by the high-order bits of
>>>  the address, as follows:
>>> 
>>>     Address type         Binary prefix        IPv6 notation   Section
>>>     ------------         -------------        -------------   -------
>>>     Unspecified          00...0  (128 bits)   ::/128          2.4.2
>>>     Loopback             00...1  (128 bits)   ::1/128         2.4.3
>>>     Multicast            11111111             ff00::/8        2.6
>>>     Link-Local unicast   1111111010           fe80::/10       2.4.6
>>>     Global Unicast       (everything else)
>>> 
>>> 
>>> I wonder if this table should explicitly call out ULAs, and provide a
>>> reference to the corresponding section.
>> 
>> ULAs are not an address type, they are Global Unicast. Adding them here might confuse people. And if we include ULAs then there is lots more that we should include as well. So while I understand your question, I think it would be better not to.
> 
> The "confusing" part is that, while globally unique, their scope is not
> really global -- i.e., they are not meant to be globally routable.

Indeed, globally unique vs globally routable. But if you go into this then it's more complicated than it seems. Whether something is routable and where are an operational choice. Companies choosing to interconnect might route each other's ULA space, while some of my RIPE NCC allocated space is not routed anywhere public. It's difficult to give a fixed definition that doesn't take operational stuff into account.

Of course the intention of how to use ULA should be mentioned somewhere, but probably not in this table.

> Wasn't there at some point an I-D aiming to clarify what "global" meant?
> -- IIRC, authored by Brian et al.

Sorry, I don't remember.

Cheers,
Sander