The Ethernet hub is arranged to connect the network port and {HEAD ~ the port} of {TAIL ~ the first interface} 
The Ethernet hub is arranged to connect the network port and { HEAD ~ the port } of { TAIL ~ the first interface }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL