In deblet the usb networking driver is loaded by default to support telnet over usb. Try these commands as root in deblet: killall utelnetd ifconfig down usb0 rmmod g_ether modprobe g_file_storage stall=0 luns=2 removable echo host > /sys/class/usb_host/usb_host1/device/mode If those work, add them into rc.local (above exit 0) and run: chmod +x /etc/rc.local -John