Avoiding DNS leaks with AdGuard Home and VPN provider

[route66]

Specify the necessary upstream (100.64.0.7) in AGH for all clients from the 10.0.20.1/24 range under Settings -> Client Settings -> Upstream DNS Servers.

Can confirm this is working.

Other parts of the setup:

[Solved] PBR with netifd question

I set up nice prioritized routing to WG VPN using this setup. All is working good with any external DNS resolver (e.g. 1.1.1.1), but my VPN provider's internal DNS IP 10.64.0.1 (to prevent DNS leaks) is not working -> no connectivity. Before implementing prioritized routing, the internal DNS IP has been working. I will really appreciate advice how to troubleshoot this, the technicalities of routing with netifd is new to me, clueless where to start looking. For completeness, I should mention I…