Re: [IPv6] RFC 6724 shouldn't prefer partial reachability over reachability

Ted Lemon <mellon@fugue.com> Sat, 25 November 2023 02:47 UTC

Return-Path: <mellon@fugue.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 2EC27C15154A for <ipv6@ietfa.amsl.com>; Fri, 24 Nov 2023 18:47:42 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.908
X-Spam-Level:
X-Spam-Status: No, score=-1.908 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=fugue-com.20230601.gappssmtp.com
Received: from mail.ietf.org ([50.223.129.194]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id nbo0ZGN8OeFW for <ipv6@ietfa.amsl.com>; Fri, 24 Nov 2023 18:47:41 -0800 (PST)
Received: from mail-ua1-x92b.google.com (mail-ua1-x92b.google.com [IPv6:2607:f8b0:4864:20::92b]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6797BC15108B for <ipv6@ietf.org>; Fri, 24 Nov 2023 18:47:41 -0800 (PST)
Received: by mail-ua1-x92b.google.com with SMTP id a1e0cc1a2514c-7c449d30fa3so606798241.0 for <ipv6@ietf.org>; Fri, 24 Nov 2023 18:47:40 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fugue-com.20230601.gappssmtp.com; s=20230601; t=1700880460; x=1701485260; darn=ietf.org; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=HpykrIsKXoO0cOKi85H48LsuyDt/RFQwkYDmDYlJ/3M=; b=EfN729fUEa0M+GoqDUHbT9/9eYXSXU8nh69+OrAZ/ltGsXrRkexchNFDb2Hqv7CKV0 dIPua70zTt3MkdRZwlI7H1BcHKOOB5aDjk09d65oJyZNuA5l03og+fj7QTy7Dac5Fcwf gKj4StlCct69GP7zr1aTDMJCeWFfA+tyqXrubL5F2ZB8LPLusX2Ub6F2sv2L3DGvo9uB R77i4cfUVpiWMDVAVpppHnPuA2oslSgG0qrfh62YeFJxla3WXjXl8Ll1oKhkW5i/4CIb cG6GZMfBZOE0DlvUCffJPNizyQCNCg/k2TiwGXzdbqEqADrHOhss6GlxiYkY55WqpIE6 dZFw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700880460; x=1701485260; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=HpykrIsKXoO0cOKi85H48LsuyDt/RFQwkYDmDYlJ/3M=; b=qUsTGbAYhj0sbQBDMpqfLmaC7eM+9VmsMhN+wHSBc543B8G2FrcWVAnDiaCNKpl+IF BhcrWttKv4P1o1/iLp/I4b5h6gDdZ+qrjCZTqVf5G6S+EgztTN7++Ej94cw/a50mGNdk CjTJPe20SsgI9kHL7LVbXPK1BYOBuv1Ms0V8d83LL2rxuYzrJBiWY6giZVft+dFa6kVt MV/4m4JlWllu2M5Q9Z2jT3DEK0TBVWK3bEoQTjqmuZ7HVv4V55wEZ1UHbUl5NqN/EEME UxTS+tcGBP8llqWHTerkv9THfe7tmSQtQ0WKnmThY2U8KIoCAxWwZrveUeQ0RAmU663t 46KA==
X-Gm-Message-State: AOJu0YyYDA77dhf+3nmAi3DmtY9DCfku9Gqneni3qQR/n0NVMAXZi3Rt m/onCKz+xucpdJTcSMgojElwKMqvtTCOmXZOxZv5FA==
X-Google-Smtp-Source: AGHT+IHAbEPOYtAyIWEKxyUjOB+O+ymzSrRelLuzVAxab8t3MLTIPlUg/+vReWfkv3qV5c8jwLPlmnjrei4cQ3ltHWA=
X-Received: by 2002:a05:6102:54ac:b0:45f:3b30:9c9a with SMTP id bk44-20020a05610254ac00b0045f3b309c9amr5191979vsb.27.1700880459861; Fri, 24 Nov 2023 18:47:39 -0800 (PST)
MIME-Version: 1.0
References: <CAJU8_nV2QoGjZoegcUSXELqgeqW6OheTt32qq6YQ5XV0g5MPQw@mail.gmail.com> <10D22CA5-CD7A-471A-B4A9-21B77D16F5F7@employees.org> <CAJU8_nVQFvp_5ZnkByCvBeA7wFz9J5FVAeud2CD1Xd4UkyL_3Q@mail.gmail.com> <4202668E-EEBE-4FA6-9801-F2A9FC92CBD8@tiesel.net> <CAO42Z2y9g3ebZ2VuXDFSK71p3X2VMVQu2=h+sXSVhcfvvxn-Qg@mail.gmail.com> <CACMsEX8q7dmRAVXuOZFVS+z_hrks=n0ChBHR4Bz9gB9ryF0ZAA@mail.gmail.com> <CAO42Z2yFiKs09K-O+SxDytLst_Uu4MAae65PTgz3URLnc5MnQw@mail.gmail.com> <CAE=N4xcFU+87wXy8NkHuO7rZ-T7Z7VmTkfcYFJH3PAJ+8+NPww@mail.gmail.com> <CAJU8_nWEAwzEw-2RpYxyf-i8x_0t8AS5O4GQ8=uB0GGYDFB5jA@mail.gmail.com> <a24c332c-e949-32cc-f660-a4434aab4eef@gmail.com> <CAJU8_nUmuxZc8USDTZPJ-nQ05K3joYcXgVsExZBo6GDioWW4mg@mail.gmail.com> <CAPt1N1mNOtwZvqF7TQxJZiq_Kn8R2a94tZTHDwAei4kBBY1pyQ@mail.gmail.com> <40c0098c-65b3-21c2-5fb1-dac7d0a0f0c6@gmail.com>
In-Reply-To: <40c0098c-65b3-21c2-5fb1-dac7d0a0f0c6@gmail.com>
From: Ted Lemon <mellon@fugue.com>
Date: Fri, 24 Nov 2023 21:47:28 -0500
Message-ID: <CAPt1N1nsVMrTqYSMnUVEqSgY9xbyc+sSabUpgJtDd58CdAokxQ@mail.gmail.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Cc: 6man WG <ipv6@ietf.org>, Kyle Rose <krose@krose.org>
Content-Type: multipart/alternative; boundary="0000000000009da1e3060af1171b"
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/cIPNv-dzUyKApx6MQIlpjuaaZ5Q>
Subject: Re: [IPv6] RFC 6724 shouldn't prefer partial reachability over reachability
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.39
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: Sat, 25 Nov 2023 02:47:42 -0000

Op vr 24 nov 2023 om 21:43 schreef Brian E Carpenter <
brian.e.carpenter@gmail.com>

> I guess, it's just a bit odd for a site to have ULAs on some hosts but not
> others, which is the implication of ULA->GUA without NPT. But in a default
> table, we can't satisfy all non-default scenarios, can we?


This is likely to happen with a stub network on an infrastructure network
that doesn’t offer prefix delegation. There is no way to number the stub
network in this case other than with a ULA.

>
>