Hi,This command allow to connect to an "ISPbox" (modem/router + phone + tv) and surely for most of ethernet over USB connection:
sudo modprobe usbnet && sudo pump -i `dmesg | grep CDC | awk -F: ‘{ print $1; }’`
Hope you could use it in netcardconfig, usbnet seems not loaded automatically to bring up ethernet interface.
-- Jody