Not that haven’t said this before but this is most useful project have ever used. Wish could do more to contribute but do not code so not much that can do.
Question. Is it possible to use a (default not custom) relay server without using discovery servers? For example if using “fixed” addresses for devices, such as tcp://name.domain.com instead of “dynamic” can relay servers be used without discovery servers turned on or does relaying require querying a discovery server to decide which relay to use for both machines using the relay?