//usage: "[-f device] ([-t name] | -d name)" IF_FEATURE_TUNCTL_UG(" [-u owner] [-g group] [-b]")
//usage:#define tunctl_full_usage "\n\n"
//usage: "Create or delete tun interfaces\n"
-//usage: "\nOptions:"
//usage: "\n -f name tun device (/dev/net/tun)"
//usage: "\n -t name Create iface 'name'"
//usage: "\n -d name Delete iface 'name'"