>>> I think this is another point in favor of doing QNAME minimization.
>>> RFC7816 (technically experimental, but recommended.)
>>>
>>> It kind of makes the query order moot; the resolver looks up the shorter
>>> name first even while resolving the longer name.
>>>
>>
>> Is there any data or even a hint of how widely that experiment has been
>> deployed or implemented?
>>
>
> It's on by default in (recent versions of) a number of popular open source
> DNS resolver implementations (BIND, Unbound, Knot).
And PowerDNS Recursor, see
https://doc.powerdns.com/recursor/settings.html#qname-minimization
Steinar Haug, AS2116
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