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