Re: [Ntp] Antw: Re: Antw: Re: Calls for Adoption -- NTP Extension Field drafts -- Four separate drafts

Hal Murray <hmurray@megapathdsl.net> Mon, 16 September 2019 06:36 UTC

Return-Path: <hmurray@megapathdsl.net>
X-Original-To: ntp@ietfa.amsl.com
Delivered-To: ntp@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 13AA8120048 for <ntp@ietfa.amsl.com>; Sun, 15 Sep 2019 23:36:52 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: 1.035
X-Spam-Level: *
X-Spam-Status: No, score=1.035 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HELO_DYNAMIC_IPADDR=1.951, RDNS_DYNAMIC=0.982, SPF_HELO_NONE=0.001, SPF_NONE=0.001] autolearn=no autolearn_force=no
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 7ER7w1FJ1eeH for <ntp@ietfa.amsl.com>; Sun, 15 Sep 2019 23:36:50 -0700 (PDT)
Received: from ip-64-139-1-69.sjc.megapath.net (ip-64-139-1-69.sjc.megapath.net [64.139.1.69]) by ietfa.amsl.com (Postfix) with ESMTP id 3DC9F12001A for <ntp@ietf.org>; Sun, 15 Sep 2019 23:36:49 -0700 (PDT)
Received: from shuksan (localhost [127.0.0.1]) by ip-64-139-1-69.sjc.megapath.net (Postfix) with ESMTP id 3343940605C; Sun, 15 Sep 2019 23:36:49 -0700 (PDT)
X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.3
To: Miroslav Lichvar <mlichvar@redhat.com>
cc: ntp@ietf.org, hmurray@megapathdsl.net
From: Hal Murray <hmurray@megapathdsl.net>
In-Reply-To: Message from Miroslav Lichvar <mlichvar@redhat.com> of "Wed, 04 Sep 2019 11:51:11 +0200." <20190904095111.GJ15024@localhost>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Date: Sun, 15 Sep 2019 23:36:49 -0700
Message-Id: <20190916063649.3343940605C@ip-64-139-1-69.sjc.megapath.net>
Archived-At: <https://mailarchive.ietf.org/arch/msg/ntp/jAZVPrQfDGzIRw7m38Fg_rluKdg>
Subject: Re: [Ntp] Antw: Re: Antw: Re: Calls for Adoption -- NTP Extension Field drafts -- Four separate drafts
X-BeenThere: ntp@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: <ntp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ntp>, <mailto:ntp-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ntp/>
List-Post: <mailto:ntp@ietf.org>
List-Help: <mailto:ntp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ntp>, <mailto:ntp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 16 Sep 2019 06:36:52 -0000

mlichvar@redhat.com said:
>> Can we assume that every server will have an Ethernet host address?
> The vast majority will, but I'm not sure we can rely on them being random. 

They are definitely not random.  They are unique.  (unless somebody screws up)

Within a batch of Ethernet cards, they will probably be sequential.  (I'll say 
more if anybody wants.)

My handwave guess is that the chances of a collision is in the same ballpark 
as the chances of poor random numbers.


-- 
These are my opinions.  I hate spam.