Matching by ip-addresses/networks

[extrad]

Thank you for that awesome software. However, there's a small draw I've been unable to solve by now:
A number of popular open dns-providers (Cloudflare) do not pass client's source network via edns.
It'd be really helpful to match by source ip-address (networks) to build a list of exclusions in addition to matching by countries/regions.
Of course, one can edit mmdb-databases directly but this feature would greatly improve flexibility.