@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
@param sw_if_index - interface index of existing tap interface
@param use_random_mac - let the system generate a unique mac address
@param tap_name - name to associate with the new interface
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
@param sw_if_index - interface index of existing tap interface
@param use_random_mac - let the system generate a unique mac address
@param tap_name - name to associate with the new interface