TUN_OPEN          273 net/if_tun.c   	open = tp->tun_flags & (TUN_OPEN|TUN_NBIO|TUN_ASYNC);
TUN_OPEN          319 net/if_tun.c   	if (tp->tun_flags & TUN_OPEN)
TUN_OPEN          323 net/if_tun.c   	tp->tun_flags |= TUN_OPEN;
TUN_OPEN          350 net/if_tun.c   	tp->tun_flags &= ~(TUN_OPEN|TUN_NBIO|TUN_ASYNC);
TUN_OPEN           46 net/if_tun.h   #define	TUN_READY	(TUN_OPEN | TUN_INITED)