C++ 在Winsock中获得适当的IP和MAC地址

我正在尝试使用Winsock获取外部IP和MAC地址。在我的计算机上，我安装了VirtualBox。当我试图获得我的计算机的IP和MAC地址时，我得到了2个地址。一个用于计算机，一个用于VirtualBox。下面是我获取IP和MAC地址的函数：

long NetUtils::getLocalIpAddress()
{
    if( localIpAddress == -1)
    {
        WSAData wsaData;
        if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0) {
            std::cout << "WSAStartup Error " << "WSAGetLastError" <<std::endl;
            localIpAddress = -1;
            WSACleanup();
            return localIpAddress;
        }

        char ac[80];
        if (gethostname(ac, sizeof(ac)) == SOCKET_ERROR) {
            std::cout << "Error " << WSAGetLastError() <<" when getting local host name." << std::endl;
            localIpAddress = -1;
            WSACleanup();
            return localIpAddress;
        }

        struct hostent *phe = gethostbyname(ac);
        if (phe == 0) {
            std::cout << "Yow! Bad host lookup." << std::endl;
            localIpAddress = -1;
            WSACleanup();
            return localIpAddress;
        }

        for (int i = 0; phe->h_addr_list[i] != 0; ++i) {
            struct in_addr addr;
            memcpy(&addr, phe->h_addr_list[i], sizeof(struct in_addr));
            std::cout << "Address " << i << ": " << inet_ntoa(addr) << " - "  << addr.S_un.S_addr << std::endl;
        }

        WSACleanup();
        return localIpAddress;
    }
}

long NetUtils::getLocalMacAddress()
{
    IP_ADAPTER_INFO AdapterInfo[16];       // Allocate information 
    // for up to 16 NICs
    DWORD dwBufLen = sizeof(AdapterInfo);  // Save memory size of buffer

    DWORD dwStatus = GetAdaptersInfo(      // Call GetAdapterInfo
        AdapterInfo,                 // [out] buffer to receive data
        &dwBufLen);                  // [in] size of receive data buffer
    assert(dwStatus == ERROR_SUCCESS);  // Verify return value is 
    // valid, no buffer overflow

    PIP_ADAPTER_INFO pAdapterInfo = AdapterInfo; // Contains pointer to
    // current adapter info
    do {
        PrintMACaddress(pAdapterInfo->Address); // Print MAC address
        pAdapterInfo = pAdapterInfo->Next;    // Progress through 
        // linked list
    }
    while(pAdapterInfo);                    // Terminate if last adapter

    return 0;
}

void NetUtils::PrintMACaddress(unsigned char MACData[])
{
    printf("%02X-%02X-%02X-%02X-%02X-%02X\n", 
    MACData[0], MACData[1], MACData[2], MACData[3], MACData[4], MACData[5]);

}

long NetUtils:：getLocalIpAddress（）
{
如果（localIpAddress==-1）
{
WSAData WSAData；
if（WSAStartup（MAKEWORD（1，1），&wsaData）！=0）{
标准：：cout