The apparatus includes a data packet receiver for receiving a data packet and a processor for determining {TAIL ~ the destination} of {HEAD ~ the data packet} 
The apparatus includes a data packet receiver for receiving a data packet and a processor for determining { TAIL ~ the destination } of { HEAD ~ the data packet }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD