A network device with a configurable interface. In one aspect, a method for generating random numbers for use in a wireless communication device provides for generating random numbers, gathering a sample of the generated random numbers, and computing at least one metric, such as mean value, standard deviation, andor entropy. The multiple laundry machine may include a casing, and a plurality of individual laundry machines arranged in the casing. The controller operates the engine without either of the EGR cooler bypass or the supplemental NOx management in response to the engine operating region being a third region.