//usage: "[OPTIONS] ADDRESS[[/]NETMASK] [NETMASK]"
//usage:#define ipcalc_full_usage "\n\n"
//usage: "Calculate IP network settings from a IP address\n"
-//usage: "\nOptions:"
//usage: IF_FEATURE_IPCALC_LONG_OPTIONS(
//usage: "\n -b,--broadcast Display calculated broadcast address"
//usage: "\n -n,--network Display calculated network address"