Having a problem with the installation off HACS on Home Assistant OS 8.1 core 2022.5.5, running on RP Pi 4 2Gb. Nginx running. I always get “bad address” in HA terminal
I am not sure what those issues are either, but I would be hesitant to rely on your routers DNS service for anything until you can get a clean test.
Try to look for updates to you routers firmware first.