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

Daniel Franke <dfoxfranke@gmail.com> Mon, 02 September 2019 12:37 UTC

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References: <1B4A56E7-16A6-4767-9268-BCF4BEB9A247@isoc.org> <BCA949D7-7D92-43A9-9766-573559A9FC70@meinberg.de> <5D66392D020000A100033273@gwsmtp.uni-regensburg.de> <8F6BAF5F-CC7B-47B9-90FD-BD20D6ABE845@meinberg.de> <20190828103752.GI24761@localhost> <3f4b55ca-02d9-a470-229b-40860866efbf@nwtime.org> <20190828111458.GJ24761@localhost> <e50112dd-f918-1135-74c8-a738ecb70b70@nwtime.org> <55867E75-9813-466B-8E57-0E157DE5AEB9@meinberg.de> <d308b5d4-3d6e-981b-3dfc-9d5938bad78d@rubidium.se> <252618a3-d2fb-d5b1-baa4-72b16ef0f845@nwtime.org> <926287B2-62AD-4653-8726-A117EFC2A8B0@meinberg.de> <aca0fb0a-14b0-42a0-aa55-de5603e76b11@nwtime.org> <B5445640-4B7C-487C-9C16-5D6B8AEEC7D3@meinberg.de> <d7d3e82d-2c9d-b360-9339-f3527973176d@nwtime.org>
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From: Daniel Franke <dfoxfranke@gmail.com>
Date: Mon, 02 Sep 2019 08:37:13 -0400
Message-ID: <CAJm83bDSLuFif7k3nofsq8ZxzC7GVE181fcXmQALVNZAEC=9fg@mail.gmail.com>
To: Harlan Stenn <stenn@nwtime.org>
Cc: Heiko Gerstung <heiko.gerstung@meinberg.de>, "ntp@ietf.org" <ntp@ietf.org>
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Subject: Re: [Ntp] Antw: Re: Calls for Adoption -- NTP Extension Field drafts -- Four separate drafts
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On Mon, Sep 2, 2019 at 8:30 AM Harlan Stenn <stenn@nwtime.org> wrote:

> Similary, a v4 system that gets a v5 (or greater) packet, the v4 system
> should respond with a v4 packet.

If a v4 server gets a v5 packet and doesn't know anything about v5,
then how can it know that it's parsing the request correctly or
understand its semantics well enough to give a meaningful v4 reply?
Servers should not respond at all to packets with unrecognized
versions.

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