I’m using an IPv4 only Linux host to connect to Verizon network, which supports IPv4V6 APN.
Connection is establish and I receive an IPv4 address (while modem receives both). After a couple of minutes, I cannot access the internet and when inspecting the Linux network interface, I see its RUNNING flag is down (not showing). EM7455 is still connected to the internet, as both ‘AT+CGPADDR=3’ and ‘AT!SCACT?’ return IP addresses and active connection replies, respectively.
Any ideas why this happens?