Ever since migrating hassio to using my local hostnames instead of fixed IP addresses it appears that hassio doesn’t cache any of the DNS queries. Because of this, my pihole registers roughly 3000 queries per 10 minutes from hassio. My database log is on a network machine and I used the local DNS name in the sql link. Anyway, this makes hassio the most DNS aggressive unit on my network by far. The router is second inline with between 100 and 200 DNS requests per 10 minutes.
Anyone else seeing this behavior?
EDIT: just stumbled across a thread describing very similar results.
EDIT#2 (3/1/2020): by trial and error I determined that the excess traffic was caused by the ZoneMinder integration – for some reason this integration doesn’t cache the IP so it queries the DNS for the name about 4-5 times a second. I’ve flipped that one back to an IP address.