[Ntp] Re: Murray Kucherawy's No Objection on draft-ietf-ntp-interleaved-modes-07: (with COMMENT)

"Murray S. Kucherawy" <superuser@gmail.com> Thu, 22 August 2024 16:15 UTC

Return-Path: <superuser@gmail.com>
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 2F0B9C1519A7; Thu, 22 Aug 2024 09:15:00 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.108
X-Spam-Level:
X-Spam-Status: No, score=-2.108 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, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01] 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 5revoz9Z_WgA; Thu, 22 Aug 2024 09:14:59 -0700 (PDT)
Received: from mail-lf1-x12a.google.com (mail-lf1-x12a.google.com [IPv6:2a00:1450:4864:20::12a]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B47D3C151986; Thu, 22 Aug 2024 09:14:59 -0700 (PDT)
Received: by mail-lf1-x12a.google.com with SMTP id 2adb3069b0e04-53343bf5eddso1415506e87.1; Thu, 22 Aug 2024 09:14:59 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1724343297; x=1724948097; darn=ietf.org; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=xxtbH52KqCYICrbhOFO6PsVKqOgAme2ow39+msLk7Do=; b=XQw58RMgpy1F+PYwTkSJ26FdayfQrCdZgZ4DNdP168t96GjeKn25ejcYJE4BqfySqQ 5qsfn9ioU/7TLozJ5hwyPM1vBaDWkJCT56pSrSs6Dv34oeHjThRcEGxNGxKV71gnDnwW iRY/qwbhoNtysUuYcSr7Fdk+DrFYqkI/MsXnMoMOR/m3ty0YEyznNHBzCptLrocDVkdq hNirKx/tYRWJvJAjPBLKSk4M9Xoeh44VEE8oA4ucMceChpfTMri7Bzx1I8DH3n5ocpo2 M0ZCjfEo+9eH7CXZwes0QwfVTBt7ykOZeasFfe3NXA4sIUtkb0h4npQQrGEENMVqC+pC 857w==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724343297; x=1724948097; h=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=xxtbH52KqCYICrbhOFO6PsVKqOgAme2ow39+msLk7Do=; b=U9Zaz+9xRcvU4ESpePB7VrUFxHvw+Ta73HsD+GMJ/NFbcnmbXVMsh1JssvxLoJoM/q Yxw/gvvqPCgdDASC7rOsLqwKrCO5c8JUS3tQ+gzxqcxmSbE/XujRBh/L8YZ9XDSo18gK XRvYIAmtW6V1nGoFl7/KAcqO3hbGt1WVoSfc2kOe7dzoa4MojsT9CoNtwLlBv5MSlbGB Nz2c8zPsEI4i2P1y+U2SSWAYaWK/q+7D5e3t5zCIhOhemB8lqGtY0Upkf0YTgQ8VlQ1z R8z3CPJTdCoR/fZRylb7TsD6ZIwE7Rp1VSsZ38hAlWIpW2ESu0jVNhj1eY3wlSy8B/kf 0vyA==
X-Forwarded-Encrypted: i=1; AJvYcCVshbDjeILbhbzYaHlSMKLYZRRIun4FZ5SkbvRF7hlstBV/ytNpdz2370ukY5/je2mtE1xLKb+u2UOBrg==@ietf.org, AJvYcCW8AP12aTA5P/PL9JrdjmUIHFSCXICcDNcffdWMkZ3ct8g+Wi7uzOBbqmqVG27CkJYPUkug8n4I2KqlYde3DdXowBqp0J8NKWTATCpa7hd+lA==@ietf.org, AJvYcCWOYprlMeZ1jf95XXmFgCXgw6QSfgXQYeXsMZ/EIdnPyjFlw30koSRnqG0arb/IkkTrH4xw@ietf.org
X-Gm-Message-State: AOJu0Yx5+AYXhn/9DYlWgN9+xcZkRxxxrcpFQnyrFWixcMB9sI5iDG3P jSmptRnQEzi9rOCR3taWL6nYJ0V57m/xScIv+aVUl0ijNmr2PJWcdMOoZCKFpCxni5rmNC+szEQ oWMeMVQ74s/wQ4e22PYWRIXxyk0lXs0AH
X-Google-Smtp-Source: AGHT+IFUekvvy/FtgWIFAOeX6UzGqnThFdqFwM0g2KiL0sIcenIY+IRPUxhUrr0ldgexDTikoukVuNZK9E8WhykCxso=
X-Received: by 2002:a05:6512:3989:b0:52e:fc74:552c with SMTP id 2adb3069b0e04-53348582f23mr4020578e87.33.1724343296627; Thu, 22 Aug 2024 09:14:56 -0700 (PDT)
MIME-Version: 1.0
References: <172430714178.2516744.14943185824171903015@dt-datatracker-6df4c9dcf5-t2x2k> <ZsdKL65bWceeLr6R@localhost>
In-Reply-To: <ZsdKL65bWceeLr6R@localhost>
From: "Murray S. Kucherawy" <superuser@gmail.com>
Date: Thu, 22 Aug 2024 09:14:44 -0700
Message-ID: <CAL0qLwZamkdwb3Lv1QxQx-hs5TYe_C0HRbm=o4Xca1hHkGY-zA@mail.gmail.com>
To: Miroslav Lichvar <mlichvar@redhat.com>
Content-Type: multipart/alternative; boundary="000000000000aaa28d062047f584"
Message-ID-Hash: LTQTYF5JW6YB253KEF56GA33BQBIT7VG
X-Message-ID-Hash: LTQTYF5JW6YB253KEF56GA33BQBIT7VG
X-MailFrom: superuser@gmail.com
X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-ntp.ietf.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header
CC: The IESG <iesg@ietf.org>, draft-ietf-ntp-interleaved-modes@ietf.org, ntp-chairs@ietf.org, ntp@ietf.org, odonoghue@isoc.org
X-Mailman-Version: 3.3.9rc4
Precedence: list
Subject: [Ntp] Re: Murray Kucherawy's No Objection on draft-ietf-ntp-interleaved-modes-07: (with COMMENT)
List-Id: Network Time Protocol <ntp.ietf.org>
Archived-At: <https://mailarchive.ietf.org/arch/msg/ntp/XaGrxFzNQ4ma2lptGRTj3HlN18c>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ntp>
List-Help: <mailto:ntp-request@ietf.org?subject=help>
List-Owner: <mailto:ntp-owner@ietf.org>
List-Post: <mailto:ntp@ietf.org>
List-Subscribe: <mailto:ntp-join@ietf.org>
List-Unsubscribe: <mailto:ntp-leave@ietf.org>

On Thu, Aug 22, 2024 at 7:24 AM Miroslav Lichvar <mlichvar@redhat.com>
wrote:

> > > When the server receives a request from a client, it SHOULD respond in
> the
> > interleaved mode if the following conditions are met:
> >
> > Why would an implementer opt not to comply with this SHOULD?  What are
> the
> > implications of not doing so?
>
> This was meant to avoid forcing servers to respond in interleaved
> mode, for example to improve the timekeeping performance or server
> performance. The server might be able to respond, but it prefers to
> not to do that, e.g. it still has the old timestamps but it now knows
> their accuracy was worse than the current non-interleaved timestamps.
>

I think you should say something like this.  Otherwise I have no idea what
the implications are of doing one or the other.

-MSK