Questions about NAPTR
marka at isc.org
Tue Sep 19 04:59:45 UTC 2017
In message <1505796688.2518.99.camel at biplane.com.au>, Karl Auer writes:
> On Tue, 2017-09-19 at 13:56 +1000, Mark Andrews wrote:
> > In message <1505734269.2518.70.camel at biplane.com.au>, Karl Auer
> > writes:
> > > And is it true that "if the Regexp field is not empty, the
> > > Replacement field will not be used"?
> > With the current flags no but who know what will happen in the
> > future.
> Not sure what "no" means. My fault for putting up a statement with two
> It seems to me that the output from a NAPTR is EITHER the result of
> applying a regexp to the left-hand side domain name, OR the value of
> the replacement field. I.e., they are mutually exclusive. So if the
> regexp is empty, the replacement is used verbatim. If the regexp is NOT
> empty, the replacement is ignored (but still has to conform to domain
> name syntax, hence the need for a dot).
> Is that understanding correct?
As things currently stand yes. Someone could write a document today
that specifies a flag that combines the fields. The future is uncertain.
> Thanks, K.
> Karl Auer (kauer at biplane.com.au)
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Mark Andrews, ISC
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