static int drvNATFindSpecialOptions(PCFGMNODE pCfgHandle) {
    for (PCFGMNODE pNode = CFGMR3GetFirstChild(pCfgHandle); pNode; pNode = CFGMR3GetNextChild(pNode))
    {
           /* Find boop_filename */
           char  bootp_filename[255];
           int rc = CFGMR3QueryString(pNode, "bootp_filename", &bootp_filename[0], sizeof(bootp_filename));
          if (rc == VERR_CFGM_VALUE_NOT_FOUND) {
                  LogRel(("Error, bootp_filename can't be found\n"));
          } else {
                  LogRel(("Found bootp_filname = %s\n",bootp_filename));
          }
    }
 return 0;
}