+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