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[dns-wg] PTR-Queries asking for type A or AAAA

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Bjørn Mork bjorn at mork.no
Sat Jan 9 15:56:40 CET 2016

Randy Bush <randy at psg.com> writes:

>> today I noticed, that my DNS servers are getting a noticable amount of
>> DNS queries for my IPv4 reverse zone, asking for type A or AAAA.
>
> how strange, as a reverse zone should pretty much be all PTRs

Not always: https://cr.yp.to/djbdns/walldns.html

Maybe someone is testing for walldns presence?  Not that it is a
particularily good test, but you never know what the kids will do...
Nope, that cannot explain AAAA requests so there is probably something
else going on.



Bjørn

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