Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03 / Extension fields
Miroslav Lichvar <mlichvar@redhat.com> Wed, 01 December 2021 11:27 UTC
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Date: Wed, 01 Dec 2021 12:27:02 +0100
From: Miroslav Lichvar <mlichvar@redhat.com>
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Subject: Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03 / Extension fields
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On Thu, Nov 25, 2021 at 09:47:48PM -0600, Dan Drown wrote: > For the offset correction extension (5.5), are there any implementations of > this? I've heard that it is harder to parse optional headers in asics, > should this extension be required to be at a fixed location? something like: > "if this extension is present, it MUST be the first extension field after > the NTPv5 header" That would probably be easier for implementation in hardware, but it would cause a problem for authentication. The field would have to be skipped when the authenticator is calculated. Is it worth the trouble? I have no idea if anyone is actually willing to implement the correction field. In any case, it will still be more difficult to implement than the PTP correction field as NTP works with timestamps corresponding to the end of the reception instead of beginning. -- Miroslav Lichvar
- [Ntp] comments on draft-mlichvar-ntp-ntpv5-03 Dan Drown
- [Ntp] Antw: [EXT] comments on draft‑mlichvar‑ntp‑… Ulrich Windl
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03 Miroslav Lichvar
- Re: [Ntp] Antw: [EXT] comments on draft‑mlichvar‑… Miroslav Lichvar
- [Ntp] Antw: Re: Antw: [EXT] comments on draft‑mli… Ulrich Windl
- Re: [Ntp] Antw: Re: Antw: [EXT] comments on draft… Miroslav Lichvar
- Re: [Ntp] Antw: Re: Antw: [EXT] comments on draft… Ulrich Windl
- Re: [Ntp] Antw: Re: Antw: [EXT] comments on draft… Miroslav Lichvar
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Miroslav Lichvar
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Miroslav Lichvar
- Re: [Ntp] comments on draft‑mlichvar‑ntp‑ntpv5‑03 Dan Drown
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Dan Drown
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Harlan Stenn
- Re: [Ntp] comments on draft‑mlichvar‑ntp‑ntpv5‑03 Steven Sommars
- Re: [Ntp] comments on draft‑mlichvar‑ntp‑ntpv5‑03 Dan Drown
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Dan Drown
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Dan Drown
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Dan Drown
- [Ntp] Antw: [EXT] Re: comments on draft‑mlichvar‑… Ulrich Windl
- [Ntp] Antw: [EXT] Re: comments on draft‑mlichvar‑… Ulrich Windl
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Dan Drown
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Miroslav Lichvar
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Miroslav Lichvar
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Dan Drown
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Dan Drown
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Miroslav Lichvar
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Miroslav Lichvar
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Miroslav Lichvar
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Danny Mayer
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Dan Drown
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Dan Drown
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Dan Drown
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Miroslav Lichvar
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Danny Mayer
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Doug Arnold
- Re: [Ntp] comments on draft-mlichvar-ntp-ntpv5-03… Miroslav Lichvar