@param sock_filename - unix socket filename, used to speak with frontend
@param use_custom_mac - enable or disable the use of the provided hardware address
@param mac_address - hardware address to use if 'use_custom_mac' is set
@param sock_filename - unix socket filename, used to speak with frontend
@param use_custom_mac - enable or disable the use of the provided hardware address
@param mac_address - hardware address to use if 'use_custom_mac' is set