Bind 9.3.2 - how do i know dns is using which root server

[Kevin Darcy]

Alex Tang wrote:

>Hi All
>
>Please help
>
>how do i know dns is using which root server to query per request ? ( per transaction )
>
Your question is flawed, inasmuch as it seems to assume that a root
server is used for each query. In actuality, what happens is that named
gets the root-zone information at startup via a "priming" query, builds
up a whole hierarchy of cached information as queries come in and the
results are cached, and very rarely needs to go back up to the roots for
anything.

The real question is: why do you care what root server is or is not used
in the resolution of a particular query?

- Kevin