Re-enable the Ethernet over USB0

I’m running a BeagleBone Black with Debian, 3.8.13-bone63. DCAN1 is enabled.

Some (long) time ago I’ve disabled the Ethernet over USB0. Because I’m fairly new in Linux, I can’t remember how. To re-enable it I’ve uncomment the corresponding settings in /etc/network/interfaces to

Ethernet/RNDIS gadget (g_ether)

… or on host side, usbnet and random hwaddr

Note on some boards, usb0 is automaticly setup with an init script

iface usb0 inet static

After rebooting and “ifconfig -a” there is no “usb0”. After that i’ve added “/lib/modules/3.8.13-bone63/kernel/drivers/usb/gadget/g_ether.ko” to “/etc/modules”

After reboot there is again no “usb0”. After “modprobe g_ether” and “/etc/init.d/networking restart”, I can find “usb0” with “ifconfig”.

How can I do it, that the Ethernet over usb0 will automatically load/starts again during startup.