NAPTR resource
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... version of the use of SRV and/or a very
restricted application of the use of NAPTR resource records.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
...
... target is found.
For the rest of this section, refer to the set of NAPTR resource
records for example.com, shown in the figure below, where "WP" is the
imagined application service tag ...
... Although this document proposes a DDDS application that does not use
all the features of NAPTR resource records, it is not intended to
imply that DNS resolvers should fail to implement all aspects of the
...