May be off-topic not related to vyos, but i use a M2M Modem + SIM which is serviced by ppp inside a Rasberry Pi OS on one end.
Other end Trying to push some data or connect to the remote Linux/Ubuntu Machine from Rasberry Pi which controls M2M Modem+SIM.
I see the connection works pretty good with ethernet which is eth0.
what are the steps i need to do on the Ubuntu server to ensure that there is seamless connection between M2M SIM and Linux/Ubunu PC
Thanks in advance, appreciate responses on ppp client-server connection