WinSock error 10049

I am trying to do raw sockets on Windows 7. In runtime when I do

Code:

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// Initialize Winsock
        iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
        if (iResult != 0) {
                printf("WSAStartup failed: %d\n", iResult);
                return 1;
        }


        // Create a SOCKET for connecting to server
        sd = WSASocket(AF_INET, SOCK_RAW, IPPROTO_TCP, 0, 0, 0);
    if (sd == INVALID_SOCKET) {
        printf("Error at socket(): %ld\n", WSAGetLastError());
                WSACleanup();
        return 1;
    }

        int val = 1;
        if (setsockopt(sd, IPPROTO_IP, IP_HDRINCL, (const char*)&val,
            sizeof(val)) == SOCKET_ERROR) {
        printf("IP_HDRINCL setsockopt failed: %ld\n", WSAGetLastError());
        return 1;
    }

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I get "IP_HDRINCL setsockopt failed: 10049". 10049 is documented as Cannot assign requested address. I'm not trying to bind, so it's odd that this is my error num. What could be causing this error?

From here:

Quote:

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Limitations on Raw Sockets

On Windows 7, Windows Server 2008 R2, Windows Vista, and Windows XP with Service Pack 2 (SP2), the ability to send traffic over raw sockets has been restricted in several ways:

* TCP data cannot be sent over raw sockets.
* UDP datagrams with an invalid source address cannot be sent over raw sockets. The IP source address for any outgoing UDP datagram must exist on a network interface or the datagram is dropped. This change was made to limit the ability of malicious code to create distributed denial-of-service attacks and limits the ability to send spoofed packets (TCP/IP packets with a forged source IP address).
* A call to the bind function with a raw socket is not allowed.

These above restrictions do not apply to Windows Server 2008 , Windows Server 2003, or to versions of the operating system earlier than Windows XP with SP2.

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