code: def _process_option(self, tsocket, command, option):
          
          if option == ECHO:
              tsocket.sendall(IAC + DO + ECHO)
          elif command in (DO, DONT):
              tsocket.sendall(IAC + WONT + option)
          elif command in (WILL, WONT):
              tsocket.sendall(IAC + DONT + option)
docs: Ruckus FastIron/ICX does not always echo commands to output by default.
          If server expresses interest in 'ECHO' option, then reply back with 'DO
          ECHO'