if(ioctl(device_fd, TUNSIFHEAD, &zero, sizeof zero) == -1) {
logger(LOG_ERR, _("System call `%s' failed: %s"), "ioctl", strerror(errno));
return false;
}
if(ioctl(device_fd, TUNSIFHEAD, &zero, sizeof zero) == -1) {
logger(LOG_ERR, _("System call `%s' failed: %s"), "ioctl", strerror(errno));
return false;
}