Methods and apparatus for enabling a Mobile Node supporting mobile IP to roam without an assigned IP address and receive lookups indicating that a Corresponding Node wants to send information to the Mobile Node are disclosed. The multi-layer core consists of a small, hard center enclosed by a soft intermediate core layer and an outer core layer. The clutch knob is rotatably coupled to the housing member and includes an axially extending ramped surface that axially displaces the shaft in first and second axial directions upon rotation of the clutch knob in first and second rotary directions. The ion implantation process may provide a roughened surface region of the GaN layer. Each of the legs has an outer edge and a latch portion extending laterally from the outer edge adapted to latch to a bottom surface of the PCB.