# $ cp -v ./qmi-network@.service /etc/systemd/system/
# $ systemctl daemon-reload
#
# $ systemctl enable --now qmi-network@0
#
# This will NOT work without a .network for your wwan device.
[Unit]
Description=qmi-network for cdc-wdm%i device

Before=freepbx.service
Before=asterisk.service
Before=sys-subsystem-net-devices-wg*.device

After=sys-subsystem-net-devices-wwan%i.device
Wants=sys-subsystem-net-devices-wwan%i.device

[Service]
Type=simple
Restart=always
TimeoutSec=240s

ExecStartPre=-qmi-network /dev/cdc-wdm%i stop
ExecStartPre=-rm /tmp/qmi-network-state-cdc-wdm%i 
ExecStartPre=networkctl down wwan%i
ExecStartPre=sh -c "echo 'Y' | tee /sys/class/net/wwan%i/qmi/raw_ip"
ExecStartPre=qmi-network /dev/cdc-wdm%i start
ExecStartPre=networkctl up wwan%i

ExecStart=sh -e -c "sleep 30; while true; do ping -w 120 -I wwan%i -c 5 one.one.one.one || exit 1; sleep 300; done;"

ExecStop=-rm /tmp/qmi-network-state-cdc-wdm%i
ExecStop=networkctl down wwan%i
ExecStop=qmi-network /dev/cdc-wdm%i stop

[Install]
WantedBy=sys-subsystem-net-devices-wwan%i.device