It appears that Philip Homburg  <[email protected]> said:
>> How about flipping it around saying that records in the range cause
>> special processing in response to queries with the DE bit set, with
>> the details of the processing specified in the document(s) that
>> define each record.
>> 
>> While I don't immediately see a DELEGPLUSPLUS that has different
>> or more complicated behavior than DELEG, I don't see any reason to
>> assume that will never happen. Iit'd be unfortunate if we came back
>> next year and said oops it'd be great if we had a DELEGPLUSPLUS
>> that in addition does X, but we can't.
>
>For a server, DE=1 tells that the client has DELEG support. DE=0 means that
>the client has no DELEG support.
>
>However, in the future we cannot use the DE bit to distinguish between DELEG
>and DELEGPLUSPLUS. So the current definition of DE needs to be forward
>compatible enough that we can support DELEGPLUSPLUS without changes to the
>meaning of de DE bit. ...

Good point.  Now I'm scratching my head trying to imagine what else would
go in the DELEG range, if it also has to do everything that DELEG does,
presumably including returning either signed DELEG or unsigned NS.

R's,
John

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