resolve problem in particular environment

[sk.flyr]

2012/9/24 Lyle Giese <lyle at lcrcomputer.net>:
> On 09/23/12 19:14, sk.flyr wrote:
>>
>> Hello,
>>
>> I can resolve ok.example.org in the environment.
>> also I can resolve www.example.org and ipv6.example.org.
>> I cannot resolve ng.example.org in the environment.
>> Is it normal?
>>
>> dual stack environment
>>   ipv4 - configure pppoe on windows(vista,7,8) adopter
>>   ipv6 - received RA on Ethernet
>>
>> DNS records
>>   ok.example.org. CNAME www.example.org.
>>   www.example.org. A 192.0.2.80
>>   www.example.org. AAAA 2001:db8::80
>>   ;
>>   ng.example.org. CNAME ipv6.example.org.
>>   ipv6.example.org. AAAA 2001:db8::80
>>
> Depends on the question you are asking.  Are you asking for the A record
> (which there is none) or the AAAA record?  Dig defaults to asking for the A
> record, not the AAAA record.  Telling dig to ask for ANY will give you the
> answer I suspect you are looking for.

at first query A RR Windows Vista 7,8 in pppoe(ipv4) environment
of course CNAME response, at secondary  AAAA query in other environment.
but received CNAME response to give up A only, did not fallback AAAA
query in pppoe(ipv4) environment.