meta
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... the DNS implementation at hand, and whose type is not an assigned
QTYPE or Meta-TYPE as specified in [RFC2929] (section 3.1) nor
within the range ...
... within the range reserved in that section for assignment only to
QTYPEs and Meta-TYPEs. Such an RR cannot be converted to a type-
specific text format, compressed, or otherwise handled in a type-
...