Hopefully the network segregation[1] feature makes it in at some point:

> A shared network key, included in the tree announcements, will ensure that two nodes that peer with what should be segregated networks will ignore each other. This should make it much easier to operate private Yggdrasil meshes and not worry that they will end up accidentally peered to the public network.

[1]: https://github.com/yggdrasil-network/yggdrasil-go/discussion...