_IOWRN
#define SIOCGIFCONF _IOWRN('i', 92, 8) /* get if list */
#define O_SIOCGLIFCONF _IOWRN('i', 120, 16) /* old get if list */
#define SIOCGIP6ADDRPOLICY _IOWRN('i', 162, 0)
#define SIOCGDSTINFO _IOWRN('i', 164, 0)
#define SIOCGLIFCONF _IOWRN('i', 165, 16) /* get if list */
#define SIOCSCTPGOPT _IOWRN('i', 173, 16) /* Get SCTP option */
#define SIOCGLIFSRCOF _IOWRN('i', 177, 16) /* source of */
#define SIOCGETPROP _IOWRN('p', 188, 0)
#define O_SIOCGIFCONF _IOWRN('i', 20, 8) /* old get if list */