options: -h, --help Show summary of options. -V, --version Show version of program. -e, --endding Don’t change the vendor bytes. -a, --another Set random vendor MAC of the same kind. -A Set random vendor MAC of any kind. -r, --random Set fully random MAC. -l, --list[=keyword] Print known vendors ( with keyword in the vendor’s description string) -m, --mac XX:XX:XX:XX:XX:XX Set the MAC XX:XX:XX:XX:XX:XX