dvb_net_if         38 include/uapi/linux/dvb/net.h #define NET_ADD_IF    _IOWR('o', 52, struct dvb_net_if)
dvb_net_if         40 include/uapi/linux/dvb/net.h #define NET_GET_IF    _IOWR('o', 54, struct dvb_net_if)