Conditional DNS resolution for wildcards of TLD

[Tuxdude]

I would like to specify the upstream DNS server using conditional DNS resolution for a subset of TLDs.

Use Case

I use .foobar as the TLD for all of my devices and services on my internal private network. I have DNS entries on my DNS resolver at 192.168.1.1 which has host -> IP mappings as follows:

host1.foobar 192.168.1.41
host2.foobar 192.168.1.42
host3.foobar 192.168.1.43

I want blocky to resolve any hosts matching *.foobar using an authoritative DNS server in my internal private network which has the above mappings (i.e. basically my DHCP server / router which is currently maintaining these mappings).

What I tried so far

The following does not work:

conditional:
  mapping:
    .foobar: 192.168.1.1

Currently, the above still ends up using the DNS resolvers configured under upstreams. I have more than forty devices in my private network, and I don't want to use Custom DNS to specify each of these host->IP mappings.

From the documentation

The documentation mentions the above should work if my internal domain names were of the form *.foobar.foobaz. I don't see why it should be limited and why it can't be extended to also support *.foobar use case as the one I described above (the one I am using in my private network homelab setup).

conditional:
  mapping:
    foobar.foobaz: 192.168.1.1