This. It’s super easy to set up and as close to “baked into HA” you can get without it actually being part of the core OS, which technically many of the everyday things we consider “core HA” aren’t, like Samba integrations, MQTT, etc.
Thanks guys, this one I’m already using. 
I had something different in mind… 
Hello everyone, one question to the Pi-Hole integration: that little switch that is available in the HASS integration, this doesn’t work for me:
I cannot “disable blocking” on the Pi-Hole with this switch. I have not set a password on the Pi-Hole. Does anybody know how to make it work?
Do you have unset/not set a password to access the Pi-Hole?
If so it is a known issue. You’ll find a workaround there too.
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Yes, I have not set a password. Thanks a lot for the hint and the workaround! 
AdGuard Home has russian origin. So supply chain attack is possible