bt_gethostbyaddr
struct hostent * bt_gethostbyaddr (char const *addr, int len, int type);
he = bt_gethostbyaddr((char const *) &ba, sizeof(ba),
(he = bt_gethostbyaddr((char *)ba, sizeof(*ba), AF_BLUETOOTH)) != NULL) {
he = bt_gethostbyaddr((char *) &hd->bdaddr,
(he = bt_gethostbyaddr((char *)ba, sizeof(*ba), AF_BLUETOOTH)) != NULL) {
(he = bt_gethostbyaddr((char *)ba, sizeof(*ba), AF_BLUETOOTH)) != NULL) {
he = bt_gethostbyaddr((const char *)&dst, sizeof(dst), AF_BLUETOOTH);