SRV Record
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... flag determines what the next stage should be. The "S" flag
means that the next lookup should be for SRV records [4]. See
Section 5 for additional information on how NAPTR ...
... 4]. See
Section 5 for additional information on how NAPTR uses the SRV
record type. "A" means that the next lookup should be for either
an A, AAAA ...
... Concerning How NAPTR Uses SRV Records ...
...
When the SRV record type was originally specified it assumed that the
client did not know the specific domain ...
... client isn't
asking a question but is instead attempting to get at information
that it has been told exists in an SRV record at that particular
domain-name. While this usage of SRV ...
... NAPTR patterns we should see, and after the rewrite (a simple
replacement in this case) we should look up SRV records to get
information on the hosts that can provide the necessary service ...
...
Looking up SRV records for http.tcp.foo.com would return information
on the hosts that foo.com has designated to be its mirror sites. The
...
... address records (A,
AAAA, A6) rather than SRV records. Since there is no place for a
port specification in the NAPTR record ...