Dual-stack BIND resolver behaviour

[Anand Buddhdev]

On 16/05/2011 14:11, Dennis Perisa wrote:

> Hi folks,
> 
> We are looking to dual-stack our 9.7.3 DNS resolvers and I had a
> question about BIND's behaviour in a dual-stack configuration.
> 
> Assuming the resolver's cache is empty, will a query that arrives on
> an IPv6 socket always result in an outgoing query to a root server's
> IPv6 address? I have the same question for IPv4 queries.

Hi Dennis,

There's no relation between incoming recursive queries, and the outgoing
queries BIND makes to look for answers.

Whether BIND contacts the IPv4 or IPv6 address of a server (including
the root servers) depends on the latency to that server.

Regards,

Anand Buddhdev