Having a very strange issue with a ZeroTier network at the moment. Geographically dispersed nodes, on different physical networks, all Windows 10 or Server 2019. All devices show as ONLINE, but with physical IP unknown in the ZeroTier admin portal. Additionally, clients connecting over the network via RDP are randomly being disconnected, generally after leaving idle for some time, I don’t believe this is related to GPO/etc on Windows Server, but it is possible. The server people are connecting to is a Windows Server 2019 VM behind a pfsense firewall. UPnP is enabled, with default deny and an ACL allowing only the Windows Server to open unprivileged ports.