> I wonder how to interpret '. DS'/'. DELEG' queries and welcome
> opinions!
> 
> Secondly it's unclear if RFC 4035 4.3. Determining Security Status
> of Data somehow should applies to DS responses from root. I guess
> it should, but how?

My conclusion when implementing a validator was that for the purpose of
validating the a '. DS' query, the parent of the root is the root.

Basically the algorithm that finds the parent of a zone terminates in the root.
Then the NSEC at . proves that no DS record exists at the root.

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