}
fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
iff.ifr_name[0] = 0;
iff.ifr_flags = IFF_TUN | IFF_NO_PI;
if ((f = ioctl(fd, TUNSETIFF, &iff)) < 0) {
}
fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
iff.ifr_name[0] = 0;
iff.ifr_flags = IFF_TUN | IFF_NO_PI;
if ((f = ioctl(fd, TUNSETIFF, &iff)) < 0) {