[Ntp] Antw: draft-ietf-ntp-mode-6-cmds : Issue 1

["Ulrich Windl" <[e-mail]>]

>>> Brian Haberman <[e-mail]> schrieb am 18.09.2017 um 19:10 in
Nachricht <[e-mail]>:
> Ulrich noted that this document does not specify a version number for
> the mode 6 commands. I had suggested specifying it as "version 4 (or
> earlier)" given that the introduction of mode 6 commands has occurred at
> various versions of the protocol starting at RFC 1305. Ulrich pointed
> out that the version number drives the interpretation of the status words.
> 
> For people who have implemented or use mode 6 commands, what makes sense
> here? Do we need to specify a version number per mode 6 command?

Hi!

I think there are several issues:

1) Assuming there are different versions (there are!), how can one find out which version the server implements? See 2)

2) if a client requests a version different from the server, what should the server do? The server could respond with a different version number, indicating that it is not willing to respond / privide the information in the format requested. Or the server could respond with a "bad request" status. Finally the server could respond in the format requested... I have slight favor for the first variant unless there is a command to find out what message format versions the server can provide.

3) As it seems to be now, the server ignores the version (versions 2, 3, and 4 all seem to work)

Regards,
Ulrich