Latest IOS 9.3.1 update has broken WOL

Code:
+ (void)sendWOL:(NSString *)MAC withPort:(NSInteger)WOLport

{

    CFSocketRef     WOLsocket;

    

    NSLog(@"MAC = %@", MAC);

    

    WOLsocket = CFSocketCreate(kCFAllocatorDefault, PF_INET, SOCK_DGRAM, IPPROTO_UDP, 0, NULL, NULL);

    

    if (!WOLsocket) {

        NSLog(@"CFSocketCreate failed!!!");

    } else {

        NSLog(@"Socket created.");

        

        int desc = -1;

        desc = CFSocketGetNative(WOLsocket);

        int yes = -1;

        

        if (setsockopt (desc, SOL_SOCKET, SO_BROADCAST, (char *)&yes, sizeof (yes)) < 0) {

            NSLog(@"Set Socket options failed");

        }

        

        unsigned char ether_addr[6];

        

        int idx;

        

        for (idx = 0; idx + 2 <= [MAC length]; idx += 3)

        {

            NSRange     range = NSMakeRange(idx,2);

            NSString    *hexStr = [MAC substringWithRange:range];

           

            NSScanner   *scanner = [NSScanner scannerWithString:hexStr];

            unsigned int intValue;

            [scanner scanHexInt:&intValue];

            

            ether_addr[idx/3] = intValue;

        }

        

        /* Build the message to send - 6 x 0xff then 16 x MAC address */

        

        unsigned char message [102];

        unsigned char *message_ptr = message;

        

        memset(message_ptr, 0xFF, 6);

        message_ptr += 6;

        for (int i = 0; i < 16; ++i) {

            memcpy(message_ptr, ether_addr, 6);

            message_ptr += 6;

        }

        

        struct sockaddr_in addr;

        

        memset(&addr, 0, sizeof(addr));

        addr.sin_len = sizeof(addr);

        addr.sin_family = AF_INET;

        addr.sin_addr.s_addr = 0xffffffff;

        addr.sin_port = htons(WOLport);

                

        CFDataRef message_data = CFDataCreate(NULL, (unsigned char*)&message, sizeof(message));

        CFDataRef destinationAddressData = CFDataCreate(NULL, (const UInt8 *)&addr, sizeof(addr));

        

        CFSocketError CFSocketSendData_error = CFSocketSendData(WOLsocket, destinationAddressData, message_data, 30);

        

        if (CFSocketSendData_error) {

            NSLog(@"CFSocketSendData error: %li", CFSocketSendData_error);

        } else {

            NSLog(@"Message sent");

        }

    }   

}