Have you found anything? I have 2 different USB dongle and I can’t find how to change inside gateway IP address
First is usb Vodafone from Huawei brand and no setting LAN or DHCP, only DMZ. Default IP is 192.168.9.1
Second is type usb c Vodafone from ZTE brand and no setting LAN or DHCP, only DMZ. Default IP is 192.168.0.1
My Flint 2 router is 192.168.0.1. I don’t want to change LAN in router, just these USB need hack to change IP😒

If I buy M.2 board from gl-inet and second device dig inside and take off small card m.2
https://fccid.io/SRQ-M300Z/Internal-Photos/Internal-Photo-5905775
Would be work with M.2 board? No IP conflict?