[IPv6]Re: [v6ops] Re: Re: Re: New draft: "The IPv6 Loopback Address Prefix"

Michael Richardson <mcr+ietf@sandelman.ca> Mon, 23 February 2026 06:35 UTC

Return-Path: <mcr+ietf@sandelman.ca>
X-Original-To: ipv6@mail2.ietf.org
Delivered-To: ipv6@mail2.ietf.org
Received: from localhost (localhost [127.0.0.1]) by mail2.ietf.org (Postfix) with ESMTP id B6AB3BBFDC17; Sun, 22 Feb 2026 22:35:02 -0800 (PST)
X-Virus-Scanned: amavisd-new at ietf.org
X-Spam-Flag: NO
X-Spam-Score: -2.098
X-Spam-Level:
X-Spam-Status: No, score=-2.098 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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: mail2.ietf.org (amavisd-new); dkim=pass (2048-bit key) header.d=sandelman.ca
Received: from mail2.ietf.org ([166.84.6.31]) by localhost (mail2.ietf.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GnYCpB0Oy2LE; Sun, 22 Feb 2026 22:35:02 -0800 (PST)
Received: from tuna.sandelman.ca (tuna.sandelman.ca [209.87.249.19]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-256)) (No client certificate requested) by mail2.ietf.org (Postfix) with ESMTPS id 4AA04BBFDC0F; Sun, 22 Feb 2026 22:35:02 -0800 (PST)
Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id D70F438185; Mon, 23 Feb 2026 01:35:01 -0500 (EST)
Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavis, port 10024) with LMTP id ehaWzvhXk-A7; Mon, 23 Feb 2026 01:34:59 -0500 (EST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sandelman.ca; s=mail; t=1771828498; bh=0mwMrTDQ47oCGEi+tXXI8N1oACsByDm3QbuMeDB0tMg=; h=From:To:Subject:In-Reply-To:References:Date:From; b=elrjt85g5M9mtloO5MEokd+9T0Dl6yLzED3ga25gulfRHljage0ujhlj3+qjBr7JU qW9OTSbQnN7FdR1T1ryKkxRtV3FD882Ln1jrpummPrHFZwzo9Sgx1n7m1xJgkkijsL sWkFqzgYFZdmqDvogH8GPMd/5IgoSl0YRtKXSOqmvV4MA8LwPsNiv/FPpHjMUhdpmz Mfqj3p2m8j76R8j+8niutqNpmohP5ys/KuWlqc29cx9bP7/4IcOqAwtrZvdR84RATT 313JUzPtFqQ4eIp22A1atjwud94WkA4hBPsXIh6C3NTyWmU8Ash3DMm3OlN4CMfrZK a6YEg0NKXtA8A==
Received: from sandelman.ca (obiwan.sandelman.ca [209.87.249.21]) by tuna.sandelman.ca (Postfix) with ESMTP id F015D38184; Mon, 23 Feb 2026 01:34:58 -0500 (EST)
Received: from obiwan.sandelman.ca (obiwan.sandelman.ca [127.0.0.1]) by sandelman.ca (Postfix) with ESMTP id E8DE1178; Mon, 23 Feb 2026 01:34:58 -0500 (EST)
From: Michael Richardson <mcr+ietf@sandelman.ca>
To: IPv6 <ipv6@ietf.org>, IPv6 Operations <v6ops@ietf.org>
In-Reply-To: <CANP3RGdW+0nQjSyvr-s88ineC5tffV86GPx76oNo4-5oUMVMwQ@mail.gmail.com>
References: <CAHw9_i+b=uZozstCAm1Kr52Pj-_Y_aCndHc0e703rMUr9va=iA@mail.gmail.com> <DGC0NQFOMUKT.3KUWWFDFCYS06@cs.msu.ru> <CAO42Z2zV2_YT-muQ+kFb7O9h7gp-68Diukroev6mdS6SQu5e=A@mail.gmail.com> <5c59489f-5433-4112-8d93-c1799c47a13f@gmail.com> <CANP3RGdW+0nQjSyvr-s88ineC5tffV86GPx76oNo4-5oUMVMwQ@mail.gmail.com>
X-Mailer: MH-E 8.6+git; nmh 1.8+dev; Emacs 30.1
X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0;<'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m<nPbLgmtKK-5dC@#:k
MIME-Version: 1.0
Content-Type: multipart/signed; boundary="=-=-="; micalg="pgp-sha512"; protocol="application/pgp-signature"
Date: Mon, 23 Feb 2026 01:34:58 -0500
Message-ID: <31087.1771828498@obiwan.sandelman.ca>
Message-ID-Hash: YIOFV2T7U7MCXRZMOB2NT6HZFMSVPYEG
X-Message-ID-Hash: YIOFV2T7U7MCXRZMOB2NT6HZFMSVPYEG
X-MailFrom: mcr+ietf@sandelman.ca
X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-ipv6.ietf.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header
X-Mailman-Version: 3.3.9rc6
Precedence: list
Subject: [IPv6]Re: [v6ops] Re: Re: Re: New draft: "The IPv6 Loopback Address Prefix"
List-Id: "IPv6 Maintenance Working Group (6man)" <ipv6.ietf.org>
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/HAzHrYERJI5t-Khv5cT6xwxa-EA>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ipv6>
List-Help: <mailto:ipv6-request@ietf.org?subject=help>
List-Owner: <mailto:ipv6-owner@ietf.org>
List-Post: <mailto:ipv6@ietf.org>
List-Subscribe: <mailto:ipv6-join@ietf.org>
List-Unsubscribe: <mailto:ipv6-leave@ietf.org>

There was a good talk at FOSDEM26:
https://fosdem.org/2026/schedule/event/QCSKWL-firefox-local-network-access/
(thanks to PW for forwarding this around)

This relates to to cited:
  https://wicg.github.io/local-network-access/#ip-address-space-section

and I think it is unwise to make this problem harder.

I don't think we need any loopback addresses in any area other than where
this document proposes to put them.

--
Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide