Re: [Ntp] draft-mlichvar-ntp-ntpv5-01

[Miroslav Lichvar <[e-mail]>]

On Fri, Dec 11, 2020 at 01:23:07AM +0900, g16 wrote:
> As written, Some NTPv4 implementations drop requests with unknown
> extensions. As I read the draft, there is no mention of handling unknown
> extensions. So,  can NTPv5 make it a MUST requirement to just ignore
> unknown extensions instead of dropping packets? (Counted for symmetry of
> data volume)

Thanks for catching that. I added it to the draft.

> I'd say it's good for future extensibility.
> 
> When new extensions are defined in the future, a client indicates a
> supported extension by sending the extension in a request, and the server
> can only send extensions that the client supports.The  client knows if the
> server understands the extension by seeing the same extension in the
> response.

Yes, that's how it is supposed to work.

-- 
Miroslav Lichvar