IETF Logo Mail Archive

Re: [HAM-AG] [IPv6] Request for feedback: draft-evan-amateur-radio-ipv6

Evan Pratten <ewpratten@gmail.com> Fri, 17 February 2023 19:29 UTC

Return-Path: <ewpratten@gmail.com>
X-Original-To: ham-ag@ietfa.amsl.com
Delivered-To: ham-ag@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 719DDC151707; Fri, 17 Feb 2023 11:29:43 -0800 (PST)
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 hIQiyW1YWvii; Fri, 17 Feb 2023 11:29:43 -0800 (PST)
Received: from mail-ed1-x52e.google.com (mail-ed1-x52e.google.com [IPv6:2a00:1450:4864:20::52e]) (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 8FAE9C1516E9; Fri, 17 Feb 2023 11:29:17 -0800 (PST)
Received: by mail-ed1-x52e.google.com with SMTP id co2so7683605edb.13; Fri, 17 Feb 2023 11:29:17 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=dhgSgdVbVenyiOp4DHj88sDEIYJEp5TY2VFHLes8cT8=; b=p5yMhf0vdAQ3/6ZanST+4l9fFYuQSh6T/7YcBZtL+LeM6VCfnSxPf+t1AH7cSFrkyH ToZ9uXNhkGN2b/0TCRNV0B3R/OGlgm01+UPg0QM3H4GpP11bmcrn9pNoAqLP1pgoowAN xSTfzBAzOP0xHCw6vd6d4UDq4BBOR6gm8wPC2sznVSlL0xFrnpKUbR73AR/TCspGUpHY sIZj58KHXzLRkWRtDk9rBlLuUyL9mvoyKOPvNgDNcSMFOdFJyI/PytSRm3BSwgqmCibz O68M9n+YWK2BOZ1HKwfU4uQi6AQi3kJZCTD2VpwfrJnE87XNphPAzc1eNRZZxCqOXB74 vs/A==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding: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=dhgSgdVbVenyiOp4DHj88sDEIYJEp5TY2VFHLes8cT8=; b=qcnDOJdBVpFq57tx/bYk2zG9Gdkh3X6qFTbb5Q6xti5bGOUXLbt1QIlmkmG+KP9khj cvexpE4RkdZ1XKhnrvoCbDfhGJ0B8fhws9LEHt1Kc4hebbghcBxtrzOJfSoEgBreCT/5 YcBB+ADxmp6djpxxAaA15/DUrsaI3MATbOymD2sG70SWDN4sfd82uu/7CDKh+EF51QJ0 KMaJcxkuJEGG6sdDGCB2rpKkDlbLwpYPhMAJoQKoEwc66J2FMLGL/Oh2bibJiepNFt9I PdFRAovre78J5/PWMFyxeNPI1gOBZbgBSRl4PhKvh2gO+XTKLfSWgZ9Pnpo4eTUtkZek 02SQ==
X-Gm-Message-State: AO0yUKXDkjP4e3Y5G5fcwNqJhSkU8rkq0dC2XBhYNWf5iDSrS+O5jRO6 o0h8Y8e3egAEYIdhyQn/o4Tw9yCNhsMfky8YBbdSzV/gxNsZ9Q==
X-Google-Smtp-Source: AK7set+VxSgz5tmeVn41BN2opDCN90ciZkwbE18bqdp4ht1EeJ25Sk/prr2cOb5RfEysAsJYkS7f1/lhtyvY+7mbBEI=
X-Received: by 2002:a17:907:6025:b0:877:7480:c568 with SMTP id fs37-20020a170907602500b008777480c568mr872006ejc.8.1676662155897; Fri, 17 Feb 2023 11:29:15 -0800 (PST)
MIME-Version: 1.0
References: <CAD=s3w5UUgiNC=SJxigAj7TS_QHDfk+KBiWq846rVcqmRxxtLQ@mail.gmail.com> <5420a784-0c57-e40f-3e45-dd3bd9c393ea@gmail.com> <CAF4+nEGh3J0wO7+9jcHoQErcW8=hXD+sh9DLJ7QWYUoBsmLAQg@mail.gmail.com> <CAD=s3w6NFz4BA9_sdPukZQFQnS2h9yjP0ncYifX0HedOn_ZVPA@mail.gmail.com> <CAF4+nEGGtRh20503VpCPjT2VdsaoDEbcfqSTumExHZEef2Jvvg@mail.gmail.com> <CACcvr=kc6kqPpdve8VWX5RWydtvjJkmEk+ykBvM6=SrUSVXWYQ@mail.gmail.com> <CAD=s3w4Oa9NKK-6h-YEr9OSHy_=C6JBsauWSxkrw-=oS1O=EMA@mail.gmail.com> <CACcvr=nvTmhH2=a1hs4_Mp99HH01_fXFDSNsZHJ=sD-hit7FGQ@mail.gmail.com> <CAN-Dau0J9vjerdYqE+Z+L8Ggmm0MBxJfGwbCYHTdkO53CwF6bg@mail.gmail.com> <CAD=s3w42ef9yS=AWqzo_rEQLoUvPYm-aE=itLTg53kuDu-NjFA@mail.gmail.com> <CAPDSy+6X-8TD1fRC-5kFXCZyyoB=H3zS5BDJiqtCTY0iQ_tnYA@mail.gmail.com> <BL0PR05MB531630C1B08634AE91590A06AEA19@BL0PR05MB5316.namprd05.prod.outlook.com>
In-Reply-To: <BL0PR05MB531630C1B08634AE91590A06AEA19@BL0PR05MB5316.namprd05.prod.outlook.com>
From: Evan Pratten <ewpratten@gmail.com>
Date: Fri, 17 Feb 2023 14:29:04 -0500
Message-ID: <CAD=s3w5nQZCO8VuA_JykJr0WrQH+-FOyv83c0S1mqpN-YYHWRg@mail.gmail.com>
To: Ron Bonica <rbonica@juniper.net>
Cc: IPv6 <ipv6@ietf.org>, "ham-ag@ietf.org" <ham-ag@ietf.org>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Archived-At: <https://mailarchive.ietf.org/arch/msg/ham-ag/JazlG3cIXkgxMzp-zHFnbxtgH54>
Subject: Re: [HAM-AG] [IPv6] Request for feedback: draft-evan-amateur-radio-ipv6
X-BeenThere: ham-ag@ietf.org
X-Mailman-Version: 2.1.39
Precedence: list
List-Id: HAM Radio Operators Affiliate Group <ham-ag.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ham-ag>, <mailto:ham-ag-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ham-ag/>
List-Post: <mailto:ham-ag@ietf.org>
List-Help: <mailto:ham-ag-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ham-ag>, <mailto:ham-ag-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 17 Feb 2023 19:29:43 -0000

Hello Ron

On Fri, Feb 17, 2023 at 2:02 PM Ron Bonica <rbonica@juniper.net> wrote:
> I also question hashing the call sign. Since the longest possible call sign is 7 characters long, it can be encoded in 56 bits.

The longest possible callsign is not 7 characters, which is why I
proposed hashing. I've operated and seen many special event calls that
are very long (more like 10-ish characters). VC7BUFF457, for example,
has been authorized for use by the Canadian government later this
year.

> Moreover, there is a problem on hash collisions. Let’s say that I operate two call signs from the same node and (my luck) the hashes collide?

This should be addressed in my latest document revision. The chance of
collision has been greatly reduced, and a method has been proposed for
dealing with the collisions.

v2.23.0 | Report a Bug | By Email