A system establishes a virtual private network tunnel to a destination and determines a next hop for the VPN tunnel. The circuit board is disposed at the casing, and the connecting elements connect the circuit board and the casing. A substrate, mounted within the cavity of the housing, supports electronic components for carrying out the communications function. The water insoluble polymer is soluble in the volatile solvent. The sections have different orientations for their blade flexures or plates, allowing the flexible joint to act as a two-axis pivot that does not expand under fluid pressure. A comparison target value used in a given determination process is based on one or more evaluation values used in one or more determination processes which are performed before the given determination process and in which it is determined that radiation has not been irradiated.