DNS64 with IPv6-only (NAT64) resolver
Maybe it is possible to configure Knot Resolver to support this, but I haven't seen it in the documentation. An example explanation of what I mean: https://datatracker.ietf.org/doc/draft-momoka-v6ops-ipv6-only-resolver/
Basically it would be useful to set up the resolver in a way that uses NAT64 for its own queries. That way one can avoid giving the resolvers IPv4 addresses directly. I think it would be a cool and useful feature.