[Ntp] security review and NTPv5 modes

[Erik Kline <[e-mail]>]

[putting comments in text since audio was reportedly problematic]

My comment was essentially this:

A *new* protocol without satisfactory security considerations will very
likely be blocked until security concerns have been addressed.

That being said, some strategies I've seen attempted in the past have
included:

    * pointing out that it's not actually "new" and therefore "no worse
than what we have now", and/or

    * adding a very specific applicability statement.

Applicability statements need to clearly outline the circumstances in which
the less secure/insecure thing might be put into operation (like saying
security at some other layer is required, or something).

I don't particularly think these are arguments folks will want to try for
NTPv5.  Just pointing out some kinds of attempted "exemption" text I've
seen.

-ek