[Pdns-users] NS delegation problems

James Cornman james+pdns at atlanticmetro.net
Wed Feb 4 13:00:09 UTC 2015

Hello, thanks for your response.

On Wed, Feb 4, 2015 at 7:41 AM, Stefan Schmidt <zaphodb at zaphods.net> wrote:

> Below it seems that it answers just fine though.
>  [james at eng:~] % dig @ [2]
>> ptr
>> ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 <<>> @
>> ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
>> ;   IN      PTR
>> 3600 IN    NS
>>  ns17.bitronictech.net.
It indeed returns with the authoritative answer, but I believe my
expectation was that since recursion is desired, and there is a
pdns-recursor available, that it would do the deed.  Mainly that dig or
nslookup off of the pdns-authoritative server, with recursion enabled,
would end up with an actual PTR answer. You mention that BIND just happens
to do both at the same time..is that something that PDNS can't do, or
something I'm doing wrong, or in general a false perception of what is

Here you ask with the "rd" aka recursion desired flag and it appears that
> your BIND Server is indeed configured to recurse for you and go ask
> ns17.bitronictech.net about the PTR for This
> is now recursive DNS works, however it is not how authoritative DNS works.
> BIND just happens to do both at the same time.

Querying the pdns-recursor directly does return the proper result, however
ARIN isn't set to point to this pool of pdns servers and thus this
recursion is likely interacting with BIND which is still authoritative for
the reverse in-addr.arpa zone....none of which helps my troubleshooting

[root at lga1dns1 amc]# dig -p 5300 ptr @

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.30.rc1.el6_6.1 <<>> -p 5300 ptr @
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;   IN      PTR

;; ANSWER SECTION: 7200 IN    PTR     lopfar.net.

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