I have around 16 EM160R-GL
4G USB modems connected to one Ubuntu server, which I use NetworkManager
to dial up to the ISP.
The problem is that the network interface I am getting on my machine has an internal IP that is fetched from the ISP, and it keeps changing.
I am trying to set up some software that requires the modem's internal IP, so I would like to set up it so that the network interface gets a static IP.
What would be the best way to do that?