Returning "Reachable via WiFi" YES even when device at that address is powered off

[ksoftllc]

    NSString* aPrinterHost = @"10.1.10.163";
    NSString* aPrinterPort = @"9100";

    struct sockaddr_in aPrinterIP4Address;
    memset((void *)&aPrinterIP4Address, 0, sizeof(aPrinterIP4Address));
    aPrinterIP4Address.sin_family = AF_INET;
    aPrinterIP4Address.sin_port = htons([aPrinterPort intValue]);
    aPrinterIP4Address.sin_addr.s_addr = inet_addr([aPrinterHost UTF8String]);
    aPrinterIP4Address.sin_len = sizeof(aPrinterIP4Address);

    Reachability* aPrinterReachabilityStatus = 
               [Reachability reachabilityWithAddress:&aPrinterIP4Address];

At this point, [aPrinterReachabilityStatus isReachable] returns YES even though that device is powered off. Is this a bug?

[RenderCoder]

I have same problem...