FreeBSD's bundled unbound answers SERVFAIL

Wouter Wijngaards wouter at
Wed Feb 12 12:23:43 UTC 2020

Hi Patrick,

On 10/02/2020 14:27, Patrick M. Hausen via Unbound-users wrote:
> Hi!
>> Am 10.02.2020 um 14:18 schrieb Daniel Ryšlink <ryslink at>:
>> After that, increase debug level and check the debug log to see how the queries are processed - if the server fails, the debug log should contain exact infromation why it happens.
> Can one increase the debug level for the already running process like
> "rndc trace" for a running BIND named?

unbound-control can modify the running process. unbound-control
verbosity 5 logs at high detail.

Best regards, Wouter

> The problem arises very infrequently, so we did not want to have
> the debug log active permanently on all hosts (about 100 of them).
> Yet, once one of the unbound processes shows the problem, our
> Icinga will alarm us, so we can investigate ...
> Thanks,
> Patrick

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