{TAIL ~ Connection} and disconnection to and from {HEAD ~ the hosts} are carried out according to the host information 
{ TAIL ~ Connection } and disconnection to and from { HEAD ~ the hosts } are carried out according to the host information
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH