IETF Logo Mail Archive

[IPv6]Re: Analysis of Ungleich ULA Registry

Brian E Carpenter <brian.e.carpenter@gmail.com> Thu, 23 May 2024 20:42 UTC

Return-Path: <brian.e.carpenter@gmail.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 EDA3CC1D5C6E for <ipv6@ietfa.amsl.com>; Thu, 23 May 2024 13:42:05 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
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, FREEMAIL_FROM=0.001, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, 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=gmail.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 rc4dtDXsfc8o for <ipv6@ietfa.amsl.com>; Thu, 23 May 2024 13:42:05 -0700 (PDT)
Received: from mail-pl1-x62a.google.com (mail-pl1-x62a.google.com [IPv6:2607:f8b0:4864:20::62a]) (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 52211C1D4CE6 for <ipv6@ietf.org>; Thu, 23 May 2024 13:42:05 -0700 (PDT)
Received: by mail-pl1-x62a.google.com with SMTP id d9443c01a7336-1f3406f225bso8286695ad.3 for <ipv6@ietf.org>; Thu, 23 May 2024 13:42:05 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1716496925; x=1717101725; darn=ietf.org; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=x2psaIZVKHzSRjDqxhsgEnjuMymj8g/Xf7WsT5W68F4=; b=bQRjrltU65kMo1k4gZiXKjdvS1ZJLTvyfYDNS0zrdu5ce8kGNBSvsnyybcHU1ER2GB XrgugrAh/UrCiSwhHJzOOJTxjKK0UaS6zXCVI8/gjAHKD6554Remj6iqEiJcGYME0xE/ cw5lXAMd77AiGT3xea7Dx6gWT9yf2YtB7s86pbZgGGWiAqDCTIXYPJ710kP44a/1Edbw +PkUuDAMD1e1RKAwY/4isRvx9ZUmxJjxI/t8Ph/HzlzzikHmUN5mG/h6qcUpRZyhc4W1 TlZNQBMjm207eqxCHVGgazM+R7n29g28+6Bbj3lLb6klJmpzPKS7CSEcL4+SwCHYtQqV y0wA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716496925; x=1717101725; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=x2psaIZVKHzSRjDqxhsgEnjuMymj8g/Xf7WsT5W68F4=; b=Jm49jz93kj9VBo8YKG+hAlNJNtY+0IRwiSaj9fsFkC88nRScYKGhmhxpoM+iDc0N1M 8Y4lyuv9sHsHwANWShBxtkNTZbO3sLCjBR/eFY6RB9vI5Nex7v2v2X89FAxrZDGvqKN9 9cavCK+w9GTOciPdjEtZSLUU5+Ns3jVDJA7aYzRCs41TIop6moFMx7ymCL/6PTdRGs8A lWJYkSdo0G6QF783MFl9pgmI/9dFMudiiEj5mXzadtKPjvLELYLGd17LRZIeKKQTv7nl POLGH24JtqSmQyAqMdoEuJ/NB0XSRXEf8o896Q/UE+mS1iv8P+pLaEkMrqIRN+2eUvOE GjXw==
X-Forwarded-Encrypted: i=1; AJvYcCWb4r+QD6KG558ioDUKsXkNxVbXILMFmn4CFcO4iLXxMToseiGBLulRgYT3uQxFzYPTxn63IsACA/jKMQUJ
X-Gm-Message-State: AOJu0YziQiWirrNy4E6O3oNpyLQjM2whClnPXieFQFay73mTzufbuHZU BtL11twaSmzGG6gmOjafvk+aJvkHumcLjVchiYGkK6sLAr7hNWM+Z4AiTWad
X-Google-Smtp-Source: AGHT+IFF1v4DroZABAkfFq9cei8augCIcpu6JWN+GMQmXnTO5I5F/5lV2uO/wPjL7BStm9gN+RlQTg==
X-Received: by 2002:a17:902:e743:b0:1f3:d9d1:e6c2 with SMTP id d9443c01a7336-1f448d3eabcmr4397295ad.41.1716496924627; Thu, 23 May 2024 13:42:04 -0700 (PDT)
Received: from ?IPV6:2404:4400:541d:a600:44b7:2c2e:2bc6:8707? ([2404:4400:541d:a600:44b7:2c2e:2bc6:8707]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f44c7c37a9sm118435ad.96.2024.05.23.13.42.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 23 May 2024 13:42:04 -0700 (PDT)
Message-ID: <7bcaaf7e-4564-4d76-9558-ab005aa70a30@gmail.com>
Date: Fri, 24 May 2024 08:41:59 +1200
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Content-Language: en-US
To: Lorenzo Colitti <lorenzo@google.com>
References: <CAN-Dau0J1uqpwnRXYpeSFGUTJ532MmpeGd4BLoAqqf8HzeFTjQ@mail.gmail.com> <CAJU8_nW7Q3WphfgtgnK0E+88R1_nENCy9MBBYhG2G1bkPD9UeQ@mail.gmail.com> <CAN-Dau0Nc0VHMHdRg7MG6yf2X1S_SrYbA6YhKUzBz7XiLkR5cg@mail.gmail.com> <CAJU8_nX4O9hs6R6sOw2+iEL-7urcadNBdBsZfP3-Dn_yUFovLA@mail.gmail.com> <46c161b8-ca0d-4f18-ae3e-22fcb5befb0c@gmail.com> <CAKD1Yr3hTHy+p4nN1mkv4kHb907914gfyxnnzdexy6dYhNmiTw@mail.gmail.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
In-Reply-To: <CAKD1Yr3hTHy+p4nN1mkv4kHb907914gfyxnnzdexy6dYhNmiTw@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"; format="flowed"
Content-Transfer-Encoding: base64
Message-ID-Hash: EAT7VWE2ML3WXEW2RV77G6I2XEDUVATJ
X-Message-ID-Hash: EAT7VWE2ML3WXEW2RV77G6I2XEDUVATJ
X-MailFrom: brian.e.carpenter@gmail.com
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
CC: 6man WG <ipv6@ietf.org>
X-Mailman-Version: 3.3.9rc4
Precedence: list
Subject: [IPv6]Re: Analysis of Ungleich ULA Registry
List-Id: "IPv6 Maintenance Working Group (6man)" <ipv6.ietf.org>
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>

On 23-May-24 15:25, Lorenzo Colitti wrote:
> On Thu, May 23, 2024 at 11:36 AM Brian E Carpenter <brian.e.carpenter@gmail.com <mailto:brian.e.carpenter@gmail.com>> wrote:
> 
>     Right. If I want to use fd00:bec0::/32 (BEC being my initials), I certainly can, and it will disturb nobody.
> 
> 
> I believe Jen presented some data a few years ago on what prefixes are in use, based on backscatter. I don't have the link right now, but I remember that what emerged from the data is that people did not commonly use their initials. They commonly used fd00:: or fd01::. In other words, the chance of collision for human-picked ULA prefixes is very much larger than for randomly-assigned prefixes.
> 
> To use your words... will it "disturb" anyone to pick fd00::? I don't know. Networks that picked fd00:: will be disturbed if they ever interconnect with other networks that picked fd00::. Do you thik they are more likely to try to fix this using renumbering, or via NAT or NPTv6? I'd say the latter. If they do that, they will disturb application developers and users.
> 
> Is it "foolish" to pick fd00::? Well, I would say yes. But the people who picked it didn't think it was. Or maybe they just didn't know.
> 
> I don't have an issue when people make unwise or broken deployment choices. I just don't like it when people make unwise or broken deployment choices, and app developers and users end up paying the price. That's not fair.

I completely agree.

      Brian

v2.29.0 | Report a Bug | By Email | System Status