Suggestion for draft-ietf-nntpext-base-02.txt

[Brian Kantor]

> As long as the protocol allows one to specify the service that they are
> changing the password for. Not everyone likes to have one password for
> all services (i.e. RADIUS, POP, shell, etc).

This is no longer relevant to the NNTP protocol, but as a closing note,
we handle precisely that case here by using the Kerberos 'principal/instance'
concept - if we were doing it for nntp, we'd check a password against
a "brian/nntp" if one existed, else "brian".
	- Brian