dns queries return 0.0.0.0 as adress, no blacklist enabled

[JL]

   
• with Unbound service there are recurrent issues where the service simply stops responding
• dns lookups from the opnsense web-ui from any interface work as per normal
• this makes me think the problem does originate within unbound

Validating the unbound configuration i could not find any blacklist enabled. Rebooting opnsense i could find the domains which return 0.0.0.0 as address briefly do resolve correctly. The IDS was not enabled at the time since it had crashed once more, also when disabling the IDS there was no change observed for the dns queries erroneous results.