[Unbound-users] unbound 1.4.6 does not seem to have support of additional sections for NAPTR records

Florian Weimer fw at deneb.enyo.de
Mon Feb 7 05:44:27 UTC 2011

* Stephan Lagerholm:

>>There is no way to signal the absence of an AAAA RRset, so you still
>>have to make another round-trip to the DNS resolver if you're
>>IPv6-enabled and the MXes aren't.  (A and AAAA RRsets aren't cached as
>>an atomic unit.)
> Good point. I wonder how many MTAs that actually check that...

Exim does.  We learnt it the hard way, after seeing failures in the

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