help me set up the open vpn

Does anyone know how to passthrough Public IP Address to the device when using an open vpn client?

I’m using ivacy vpn and the server supports superdmz, but the router allocates only internal IPs to the device.

My device is GL-AR300M16, GL-MT300N-V2

Does it use tap?

Have you checked this one?

https://docs.gl-inet.com/en/3/tutorials/openvpn_bridge/