So, I've got a few nodes added to netmaker, but I'm not getting private dns. The coredns container is up and running but asking

resolvectl

on one of my nodes doesn't show that it's been added as a dns resolver.

coredns is not actually used in current versions.... all dns is done by adding entries to /etc/hosts using hostctl. coredns is still there as it is a possible option for dns in future.

Ah, so I can't leverage it at all?

you can use it if you'd like from ext clients; if you use the private address of the netmaker node and set it as "default ext client dns" in network settings, it will use it (but must generate new clients)