I posted this in 2022:
https://forum.cloudron.io/topic/7571/netbird-foss-noconf-mesh-vpn-using-wireguard-alternative-to-zerotier-tailscale-omniedge-netmaker-etc?_=1767395599838
along with other mesh vpn threads worth reading:
https://forum.cloudron.io/topic/4793/netmaker-manage-wireguard-networks
https://forum.cloudron.io/topic/7567/firezone-foss-noconf-mesh-vpn-using-wireguard-alternative-to-zerotier-tailscale-omniedge-netmaker-etc
https://forum.cloudron.io/topic/7560/omniedge-decentralised-noconf-mesh-vpn-using-wireguard-alternative-to-zerotier-tailscale-etc
https://forum.cloudron.io/topic/7563/tailscale-decentralised-noconf-mesh-vpn-using-wireguard-alternative-to-zerotier-etc