Resolve non ICANN registered TLDs through fallback resolver

[larena1]

I have several hosts in my network that can be resolved only through the local resolver. These hosts can be "adguard.lan", "vpn.lan" or anything else. As "lan" is not an ICANN registered TLD, these hosts should be resolved through the local resolver. That works because "lan" is in the list of fallback domains by default.

What does not work with AdGuard enabled on Android is just opening "vpn" in the browser instead of "vpn.lan". With just "vpn", AdGuard on Android will try to resolve that domain through the upstream resolver, that obviously can't resolve that and also is not meant to. With AdGuard or just AdGuard DNS disabled, that works just fine.

Hosts like this should either be appended the configured DNS search domain or be resolved through the local / fallback resolver AND NEVER BE FORWARDED TO AN UPSTREAM RESOLVER ALSO FOR CONFIDENTIALITY REASONS.