Hints zones besides "."

[Cricket Liu]

Hi, Paul.

> Aesthetically speaking, I prefer stubs to hints.  When Mark Andrews first
> implemented stubs he also convinced me that it ought to be possible for a
> stub zone to track its nameservers -- so if there is already a backup file
> then its contents are resolved into the "masters" list and the "masters"
> list in the conf file are ignored.  This would allow the root cache file
> to automatically track changes in the root name server set, for example.

With that change, I think stub zones would become much more robust.  As the
Comic Book Guy might say, "I withdraw my suggestion."

> Pretty much as soon as we have TSIG working for QUERY, we'll do this.
> (At the moment it's easy to spam named with constructed replies from a
> middle-man during its boot time root search, and I wouldn't want this kind
of
> MiM attack to cause invalid data to overwrite valid data in the "stub"
> backup file.)

Makes sense to me.

cricket