A multipath transport protocol such as multipath TCP can utilize metrics such as a wireless link condition corresponding to one or more paths as a parameter for controlling a dynamic allocation of data and control signaling over respective paths. In addition, functions are programmable as state machines. A graphics logic device is coupled to the graphics processing unit. The drill shaft is received in a sleeve permitting rotational and longitudinal displacement of the shaft. The switching devices respectively includes a transferring processor that executes a first transfer process for sending the received data to the data collection device when the received data has the first marking, and a second transfer process that sends the received data to the specified destination when the received data does not have the first marking.