[dnsdist] Many "NS ." requests

[Winfried]

On 26.08.25 14:39, Stephane Bortzmeyer via dnsdist wrote:
> On Tue, Aug 26, 2025 at 02:35:12PM +0200,
>   Stephane Bortzmeyer via dnsdist <dnsdist at mailman.powerdns.com> wrote
>   a message of 20 lines which said:
>
>> My resolver suffers under the many "NS ." requests it receives. I
>> topQueries(30)
>     1  .                                        7906 39.5%
>
> Which is probably not normal.
>
"." is not on the topQueries() list on a very busy dnsdist (Resolver 
loadbalancer) here. Is it possibly a (dnsdist) health-check?

Winfried