LE910C1-NF with Sixfab SIM in QMI mode obtains DHCP IP but can't pass traffic

I’ve followed the libqmi tutorial (Setting up a data connection over QMI interface using libqmi) and I have updated the module to the latest firmware. I am able to get an IP address vi udhcpc, but I can’t get any other IP traffic to pass (cannot ping the default gateway IP or 8.8.8.8). What am I missing?

I am running the following:

  • Raspberry Pi 3B
  • 3G/4G & LTE Base HAT
  • Telit LE910C1-NF
  • Sixfab SIM
  • Alpine Linux 3.13
    • Kernel version 5.10.29-0-rpi
AT+CGREG?
+CGREG: 0,5

OK
AT+CPIN?
+CPIN: READY

OK
AT+CSQ
+CSQ: 22,3

OK