Let me know if you find a way to do it, as I would like to leverage it on my pfSense firewall. The only way I can think of making it work is by using an intermediate Windows box as a "router" with the VPN client installed and forcing all traffic through that Windows box. It just seems very...
Do they currently support this from the OpenVPN client? From what I can tell, it only appears to be supported in their official client for WIndows, MacOS and Android.