TUN in OpenVPN does not work, how to fix it?

Question

openvpn

I took the server, configured Open VPN through a ready-made script, I take and connect the key, but it gives an error: "Failure to open the tun device without information about the IP address." I don’t know what to do, I climbed on the Internet, there is little information or I need to go deeper to understand, please help

Answer 1

Yes, you need to go deeper. As for "there is little information on the Internet" - they were amused.