if (defined('PSI_SHOW_NETWORK_INFOS') && (PSI_SHOW_NETWORK_INFOS) && (CommonFunctions::executeProgram('ifconfig', $ar_buf_b[0].' 2>/dev/null', $bufr2, PSI_DEBUG))) {
                    $speedinfo = "";
                    $bufe2 = preg_split("/\n/", $bufr2, -1, PREG_SPLIT_NO_EMPTY);
                    foreach ($bufe2 as $buf2) {
                        if (preg_match('/^\s+lladdr\s+(\S+)/i', $buf2, $ar_buf2)) {