You should be able to use it as an additional router with NAT as described here: rain4G double NAT bypass and/or tunnel
My understanding it is not possible to switch it to NCM ("stick") mode that is more suitable for OpenWrt.
You should be able to use it as an additional router with NAT as described here: rain4G double NAT bypass and/or tunnel
My understanding it is not possible to switch it to NCM ("stick") mode that is more suitable for OpenWrt.