Re: provisioning software, was DNS RRTYPEs, the difficulty with

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Mark Andrews wrote:

What should a _new_ recursive non-authoritative server send as response
back to the stub resolver when it encounters a NOTIMP response from the
authoritative server for an AAAA query?

Well the server should try the next server for the zone.  If all of them
return NOTIMP, SERVFAIL/NOTIMP.

+1, this seems logical.

What is perhaps ultimately important to a developer is its application translation of DNS query results, including the application tracking for the redundancy of failures. *Rhetorically,* does a NOIMP enable an automated trigger to disable a specific DOMAIN query? Should a protocol translate SERVFAIL as an application temporary or permanent failure? Can a temp status change to permanent due to redundancy?, etc.

--
HLS
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