bad answers from BIND9 ?

[Kevin Darcy]

Simon Waters wrote:

>Kevin Darcy wrote:
>  
>
>> 
>>The difference between the servers is that the BIND 8 nameserver happens to
>>have the answer cached. So it gives an answer. The BIND 9 nameserver
>>apparently doesn't. So it gives a referral. The respective versions of
>>BIND that these nameservers are running has no apparent bearing on the
>>contents of their responses.
>>    
>>
>
>So why do the root servers give different answers, as they don't
>allow recursion? 
>
>$ dig  +short +norec @a.root-servers.net pl ns 
>DNS3.ATMAN.pl. 
>BILBO.NASK.ORG.pl. 
>DNS2.MAN.LODZ.pl. 
>NMS.CYF-KR.EDU.pl. 
>NS.RIPE.NET. 
>SUNIC.SUNET.SE. 
>DNS2.TPSA.pl. 
>DNS.FUW.EDU.pl. 
>NS3.IKP.pl.
>
>$ dig  +short +norec @f.root-servers.net pl ns 
>$
>
I don't know why a.root-servers.net is giving a non-authoritative answer 
for .pl. Maybe it has a stub zone definition for that particular TLD (?)

                                                                       
                          - Kevin