I struggled to get coredhcp going with regards to what the config file should be named and where it should be located. It'd be great to put https://github.com/coredhcp/coredhcp/blob/master/config/config.go#L58-L64 into docs somewhere.

There are several parts (client, server) that can't be easily tested with unit tests in Go. Let's add integration tests to fill the gap

Maybe it would be useful to add (sometime down the line) an output to the script that will tell you how many records of each list you're using.
So, if a list is 1M records, and you're using 100K of them, it should tell you.

uBlock Origin, for example: