[dns-operations] Missing .us and GTLD records??

Luis Uribarri uribarri at alum.mit.edu
Fri May 21 03:38:45 UTC 2010

Yes, if there is a transport problem, then a dual stack resolver will have 
issues talking to a dual stack authoritative server, but it will not be 
compleately unable to talk to such authoritative server because of the 
availability of IPv4 on both the resolver and such authoritative 

On Thu, 20 May 2010, Matthew Pounsett wrote:

> On 19-May-2010, at 21:20, Luis Uribarri wrote:
>> If the resolver "thinks" it has IPv6 (but does not because of transport) 
>> there will be failure 2 out of 9 times on resolution which the resolver 
>> will have to compensate.
> If the resolver thinks it has IPv6, but does not because its transport is 
> broken, then the resolver is going to have problems with dual-stacked name 
> servers as well.
> This case you're describing is a misconfiguration of the resolver, not a 
> problem with the deployment of J.

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