if_req 720 ext/sockets/multicast.c struct ifreq if_req; if_req 732 ext/sockets/multicast.c if_req.ifr_ifindex = if_index; if_req 733 ext/sockets/multicast.c if (ioctl(php_sock->bsd_socket, SIOCGIFNAME, &if_req) == -1) { if_req 735 ext/sockets/multicast.c if (if_indextoname(if_index, if_req.ifr_name) == NULL) { if_req 744 ext/sockets/multicast.c if (ioctl(php_sock->bsd_socket, SIOCGIFADDR, &if_req) == -1) { if_req 750 ext/sockets/multicast.c memcpy(out_addr, &((struct sockaddr_in *) &if_req.ifr_addr)->sin_addr,