Re: Generic anycast addresses...

Ted Lemon <mellon@fugue.com> Thu, 30 May 2019 00:56 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 4D94212003F for <ipv6@ietfa.amsl.com>; Wed, 29 May 2019 17:56:26 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.899
X-Spam-Level:
X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=fugue-com.20150623.gappssmtp.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 oNtZ2dCZObvs for <ipv6@ietfa.amsl.com>; Wed, 29 May 2019 17:56:25 -0700 (PDT)
Received: from mail-pg1-x532.google.com (mail-pg1-x532.google.com [IPv6:2607:f8b0:4864:20::532]) (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 F1969120026 for <6man@ietf.org>; Wed, 29 May 2019 17:56:24 -0700 (PDT)
Received: by mail-pg1-x532.google.com with SMTP id 196so918557pgc.6 for <6man@ietf.org>; Wed, 29 May 2019 17:56:24 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fugue-com.20150623.gappssmtp.com; s=20150623; h=from:message-id:mime-version:subject:date:in-reply-to:cc:to :references; bh=Bx2wOBzJUr59Tb0rs5tmlrGI1tSJd3gZa2BuePI/M7A=; b=tNGe9wh5FgAZNofSw9nesk9o5QHNBLRyTY6pRccVG+wc5LnS0RASw9vWbuTRmlUsaA Bez90me4HLyMMPspfAVtPaYVNBttZv8dSCVZTOKiNNmafDd50tT+rakBSmbkVU1X8jUg qIasVw27YVjKXldtBYKRYAW8gCq7AGzrLM3I5yV2SgE5GHX556BOvO03jy0M94q6e4Ib 6g4C8JzS6PJLo3XbGz76VT/Vg4BVD/1uzWDmm4oNwN8yDvPA4a3Yq30Q6q4nT1RX4jaD Rvqe+W+t7SvbytqwvyOxFBO0oRfJLzHjdZW+c/R5so+UeRGJUArSL3Wz642TpQtsnk0M db/w==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:message-id:mime-version:subject:date :in-reply-to:cc:to:references; bh=Bx2wOBzJUr59Tb0rs5tmlrGI1tSJd3gZa2BuePI/M7A=; b=LbYW/l13UDpuHWQI4fOycc2bS3Dz6gFf9oXjQmAbUv2r3cdehMmexhtq/iuT6rs14h NWkiE8lKgOjoF52fdUc2cbYOCEXaKsOMArr+Ehda3Uabrd3yOotlKSpBYaWlum+K2vem EurzcBsb1jwwS6OuUbo0tVHiDt/cYqOxH1XG/Qi1T7anvptRYCwi4+Lq0PXIEqLRK+5n bhvdVnxpIVIqEKSdcRD4ORRwWtS9bo2q+IThrySqFSS8VZ3puXqe/EhIT414dGsAwVOi nKaIWRvKwzXghmJMo1SV4JBmlUmzB9PFjFNkSj+Vb/K1QaZsFyUTPMG6oDZs+sqwVAI5 czAw==
X-Gm-Message-State: APjAAAXvUpTFTZOuyXI+dXDHHfA4RXmLtBQIwJk8p1HTEvwtjgy0zReT 3AiuAIVh2IyLDzVLQqcjdDKzLw==
X-Google-Smtp-Source: APXvYqy4cBkJBHWDXHOha7Eq3JxrYYsH5Qf07RVn9l7ny/D4DRdRV1jySvwHmOcHLDXTR/xK3zL7+g==
X-Received: by 2002:a17:90a:cf12:: with SMTP id h18mr596652pju.77.1559177784384; Wed, 29 May 2019 17:56:24 -0700 (PDT)
Received: from [17.230.171.24] ([17.230.171.24]) by smtp.gmail.com with ESMTPSA id u20sm826923pfm.145.2019.05.29.17.56.23 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 29 May 2019 17:56:23 -0700 (PDT)
From: Ted Lemon <mellon@fugue.com>
Message-Id: <DD8E65E5-3A9C-4ED9-9ED4-F64898AC0CBC@fugue.com>
Content-Type: multipart/alternative; boundary="Apple-Mail=_053F2B37-AEC4-4C66-AC83-A17C769D28B1"
Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\))
Subject: Re: Generic anycast addresses...
Date: Wed, 29 May 2019 17:56:22 -0700
In-Reply-To: <83ABDD66-9B41-4845-A958-5B721FE78C1B@gmail.com>
Cc: "6man@ietf.org" <6man@ietf.org>, Dave Thaler <dthaler@microsoft.com>
To: Bob Hinden <bob.hinden@gmail.com>
References: <D22E680C-3EE3-4AD7-90C0-9339DA2E5A29@fugue.com> <BN6PR21MB04978DB375C05CB3CE4C914EA31F0@BN6PR21MB0497.namprd21.prod.outlook.com> <4EF97F31-1F39-4150-B044-955C46E96FB4@fugue.com> <20190530002833.wfvjfbj2lv2ig664@faui48f.informatik.uni-erlangen.de> <7A9560FC-0393-45DF-8389-B868455AC6DD@fugue.com> <83ABDD66-9B41-4845-A958-5B721FE78C1B@gmail.com>
X-Mailer: Apple Mail (2.3445.104.11)
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/enpg-FuuxSX_8O2vC5yUwk_S6PQ>
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: Thu, 30 May 2019 00:56:26 -0000

On May 29, 2019, at 5:48 PM, Bob Hinden <bob.hinden@gmail.com> wrote:
> We when ULAs were being developed, there was a notion of centrally assigned ULAs.  It’s not currently defined, but that’s was the original intent for having the “L” bit in the prefix.  See RFC4193.

Hm.   I had thought about that, but assumed there was some reason why we couldn’t do it.   But now that you mention it, since there is currently no authority other than IANA to assign these prefixes, we could in principle simply have IANA assign one of them to use for anycast addresses that anycast within the local administrative domain?