the future you were waiting for

future.c

    // Make an initial call to GetIfTable to get the
    // necessary size into dwSize
    dwSize = sizeof (MIB_IFTABLE);
    if (GetIfTable(pIfTable, &dwSize, FALSE) == ERROR_INSUFFICIENT_BUFFER) {
        FREE(pIfTable);
        pIfTable = (MIB_IFTABLE *) MALLOC(dwSize);
        if (pIfTable == NULL) {
            printf("Error allocating memory needed to call GetIfTable\n");
            return 1;
        }
    }
    // Make a second call to GetIfTable to get the actual
    // data we want.
    if ((dwRetVal = GetIfTable(pIfTable, &dwSize, FALSE)) == NO_ERROR) {