#include <linux/if_tun.h>

/*
 * man 7 netdevice
 * man 4 tap
 */

void
tap_new(void)
{
  int fd;
  struct ifreq req;

  fd = open("/dev/net/tun", O_RDWR);
  if (fd < 0)
    {
      return;
    }

  memset(&req, 0, sizeof(struct ifreq));
  req.ifr_flags = IFF_TAP | IFF_NO_PI;
  /*
   * malloc(IFNAMSIZ);
   * tun_alloc(xxxx, IFF_TAP);
   */
  strncpy(req.ifr_name, "todo", 5);
  if (ioctl(fd, TUNSETIFF, &req) < 0)
    {
      return;
    }
}