[Pdns-users] Non authoritive secondary & recursion

[David Sparks]

Sean Boran wrote:
> I'm still stuck with this problem and would really appreciate some help.
> Although pdns is answering a query correctly, the result is being
> ignored as "ecursion not available"

Perhaps related to this?

http://wiki.powerdns.com/cgi-bin/trac.fcgi/ticket/167

ds

> I use nslookup as opposed to dig, because the OS is using the same
> resolver libs as nslookup (I believe) and it means that the pdns
> answers are being ignored.
> 
> Doing a nolookup without specifying the server, for some reason the
> answer coming back is not believed. Sniffing shows the correct answer
> "A 193.5.227.236" coming back, but nslookup reports "Got recursion not
> available from 193.5.227.236"
> 
> nslookup sisns3.vptt.ch
> ;; Got recursion not available from 193.5.227.236, trying next server
> 23:02:50.842166 IP 193.5.227.232.32860 > 193.5.227.236.53: 47807+ A?
> sisns3.vptt.ch. (32)
>         0x0000:  4500 003c 0000 4000 4011 f0d0 c105 e3e8  E..<.. at .@.......
>         0x0010:  c105 e3ec 805c 0035 0028 12c3 babf 0100  .....\.5.(......
>         0x0020:  0001 0000 0000 0000 0673 6973 6e73 3304  .........sisns3.
>         0x0030:  7670 7474 0263 6800 0001 0001            vptt.ch.....
> 23:02:50.842396 IP 193.5.227.236.53 > 193.5.227.232.32860: 47807*-
> 1/0/0 A 193.5.227.236 (48)
>         0x0000:  4500 004c 0000 4000 4011 f0c0 c105 e3ec  E..L.. at .@.......
>         0x0010:  c105 e3e8 0035 805c 0038 4a2a babf 8500  .....5.\.8J*....
>         0x0020:  0001 0001 0000 0000 0673 6973 6e73 3304  .........sisns3.
>         0x0030:  7670 7474 0263 6800 0001 0001 c00c 0001  vptt.ch.........
>         0x0040:  0001 0001 5180 0004 c105 e3ec            ....Q.......
> 
> 
> When the server is specified, nslookup believes the answer, although
> the wire packets look identical to above:
> nslookup sisns3.vptt.ch 193.5.227.236
> Server:         193.5.227.236
> Address:        193.5.227.236#53
> Name:   sisns3.vptt.ch
> Address: 193.5.227.236
> 
> 
> 23:02:48.092880 IP 193.5.227.232.32860 > 193.5.227.236.53: 43960+ A?
> sisns3.vptt.ch. (32)
>         0x0000:  4500 003c 0000 4000 4011 f0d0 c105 e3e8  E..<.. at .@.......
>         0x0010:  c105 e3ec 805c 0035 0028 21ca abb8 0100  .....\.5.(!.....
>         0x0020:  0001 0000 0000 0000 0673 6973 6e73 3304  .........sisns3.
>         0x0030:  7670 7474 0263 6800 0001 0001            vptt.ch.....
> 23:02:48.093761 IP 193.5.227.236.53 > 193.5.227.232.32860: 43960*-
> 1/0/0 A 193.5.227.236 (48)
>         0x0000:  4500 004c 0000 4000 4011 f0c0 c105 e3ec  E..L.. at .@.......
>         0x0010:  c105 e3e8 0035 805c 0038 4a2a abb8 8500  .....5.\.8J*....
>         0x0020:  0001 0001 0000 0000 0673 6973 6e73 3304  .........sisns3.
>         0x0030:  7670 7474 0263 6800 0001 0001 c00c 0001  vptt.ch.........
>         0x0040:  0001 0001 5180 0004 c105 e3ec            ....Q.......
> 
> I've spend a lot of time googling, and related emails on this topic
> were not conclusive.
> 
> Thanks in advance,
> 
> Sean
> 
> 
> 2009/2/10 Sean Boran:
>> If I query the server with nslookup, relying on the fact that its the first
>> entry in resolv.conf, powerdns does not respond, probablybecause its a
>> recursive query?
>>
>> $ nslookup sisns3.vptt.ch
>> ;; Got recursion not available from 193.5.227.236, trying next server
>>
>> On the otherhand, an explicit nslookup to that powerdns answer, for the same
>> address, works fine:
>>
>>  nslookup sisns3.vptt.ch 193.5.227.236
>> Server:         193.5.227.236
>> Address:        193.5.227.236#53
>> Name:   sisns3.vptt.ch
>> Address: 193.5.227.236
>>
>>
>> Thanks for any tips...
>>
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