[TUTORIAL] ZeroTier + Proxmox PVE

Good day,
now you have a two separated networks, based on vmbr0 (LAN) and vmbr1 (ZT network).
You have to setup a gateway on PVE or hardware router by routing or masqarading.
Another way - add to a guest virtual machine two virtual interfaces: a one connected to vmbr0, and another one connected to vmbr1 to have access to both of networks throw different interfaces.

Edited: the one more way is to setup zerotier-cli on the home router and configure it as default gw inside ZT network, there are a lot of instructions in the Internet.
 
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A google search brougth me here, so I will post my solution.

* Install OPNsense as a VM in Proxmox
* Download and Install Zerotier App in OPNsense GUI
* Add LAN and Zerotier Networks to a bridge in the OPNsense GUI
* Configure Firewall in the OPNsense GUI to allow all.

Ready !