Debian tail Mobile Broadband

Apr 20 23:16:12 T470 kernel: [   15.972206] Bluetooth: hci0: Device booted in 11671 usecs
Apr 20 23:16:12 T470 kernel: [   15.972560] bluetooth hci0: firmware: direct-loading firmware intel/ibt-12-16.ddc
Apr 20 23:16:12 T470 kernel: [   15.972568] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-12-16.ddc
Apr 20 23:16:12 T470 kernel: [   15.976329] Bluetooth: hci0: Applying Intel DDC parameters completed
Apr 20 23:16:12 T470 kernel: [   15.977334] Bluetooth: hci0: Telemetry exception format not supported
Apr 20 23:16:12 T470 kernel: [   15.978304] Bluetooth: hci0: Firmware revision 0.1 build 50 week 12 2019
Apr 20 23:16:12 T470 kernel: [   16.041327] NET: Registered protocol family 38
Apr 20 23:16:12 T470 kernel: [   16.073554] Bluetooth: RFCOMM TTY layer initialized
Apr 20 23:16:12 T470 kernel: [   16.073561] Bluetooth: RFCOMM socket layer initialized
Apr 20 23:16:12 T470 kernel: [   16.073566] Bluetooth: RFCOMM ver 1.11
Apr 20 23:19:45 T470 pppd[2429]: Plugin /usr/lib/pppd/2.4.9/nm-pppd-plugin.so loaded.
Apr 20 23:19:45 T470 pppd[2429]: nm-ppp-plugin: initializing
Apr 20 23:19:45 T470 pppd[2429]: pppd 2.4.9 started by root, uid 0
Apr 20 23:19:45 T470 pppd[2429]: nm-ppp-plugin: status 3 / phase 'serial connection'
Apr 20 23:19:45 T470 kernel: [  228.995899] PPP generic driver version 2.4.2
Apr 20 23:19:45 T470 pppd[2429]: Using interface ppp0
Apr 20 23:19:45 T470 pppd[2429]: Connect: ppp0 <--> /dev/ttyACM0
Apr 20 23:19:45 T470 pppd[2429]: nm-ppp-plugin: status 5 / phase 'establish'
Apr 20 23:19:45 T470 pppd[2429]: nm-ppp-plugin: status 6 / phase 'authenticate'
Apr 20 23:19:45 T470 pppd[2429]: nm-ppp-plugin: status 8 / phase 'network'
Apr 20 23:19:45 T470 kernel: [  229.017154] PPP BSD Compression module registered
Apr 20 23:19:45 T470 kernel: [  229.019435] PPP Deflate Compression module registered
Apr 20 23:20:05 T470 pppd[2429]: Terminating on signal 15
Apr 20 23:20:05 T470 pppd[2429]: Connection terminated.
Apr 20 23:20:05 T470 pppd[2429]: nm-ppp-plugin: status 10 / phase 'terminate'
Apr 20 23:20:05 T470 pppd[2429]: nm-ppp-plugin: status 5 / phase 'establish'
Apr 20 23:20:05 T470 pppd[2429]: nm-ppp-plugin: status 11 / phase 'disconnect'
Apr 20 23:20:06 T470 [2429]: nm-ppp-plugin: status 1 / phase 'dead'
Apr 20 23:20:06 T470 pppd[2429]: Exit.
Apr 20 23:20:06 T470 [2429]: nm-ppp-plugin: cleaning up