After the doubt has been resolved and instructions are set, I suggest to add a toggle menu item to enable and disable USB Tethering.
$ nmcli c modify '83bd1823-feca-4c2b-9205-4b83dc792e1f' ipv4.method shared
$ nmcli d reapply usb0
$ nmcli c modify '83bd1823-feca-4c2b-9205-4b83dc792e1f' ipv4.method manual
$ nmcli d reapply usb0
Note: The current instructions for SXMO don't work for me, unless executing the above
nmcli
commands.
Getting value
shared
that indicates that interface is set to tethering mode.$ nmcli -f ipv4.method con 'USB Networking' shared
Getting value
activated
that indicates that tethering is activated.$ nmcli -f GENERAL.STATE con 'USB Networking' activated
Also
$ nmcli con 'USB Networking' | grep ipv4.method | awk '{print $2}' shared