Prevent DNS leak

[alexlii1971]

Is your feature request related to a problem? Please describe.

Yes, our WireGuard server was blocked, and we lost connection to server, Because I found it leaked DNS after checked at https://dnsleak.com/

Describe the solution you'd like
self-hosted resolver with Unbound Prevent DNS Leaks, and pleae refer to this repository and understand what I mean at https://github.com/complexorganizations/wireguard-manager, it is perfect to prevent DNS leak.

So, please integrate self-hosted resolver with Unbound Prevent DNS leak.

Thanks