config BR2_PACKAGE_TCPING
  	bool "tcping"
  	help
  	  tcping does a TCP connect to the given ip/port
  	  combination. The user can specify a timeout in seconds. This
  	  is useful in shell scripts running in firewalled
  	  environments. Often SYNs are just being dropped by
  	  firewalls, thus connection establishment will be retried
  	  several times (for minutes) until a TCP timeout is
  	  reached. With tcping it is possible to check first if the
  	  desired port is reachable and then start connection
  	  establishment.
  
  	  http://www.linuxco.de/tcping/tcping.html