$errors[] = $overlap;
         }
     }
 } else {
     if ($_POST['action'] == "add") {
         /* first verify user input */
         $errors = verifyCidr($_POST['subnet']);
         /* verify that nested subnet is inside root subnet */
         if ($section['strictMode'] == 1 && !$isFolder) {
             if (!($overlap = verifySubnetNesting($_POST['masterSubnetId'], $_POST['subnet']))) {
                 $errors[] = _('Nested subnet not in root subnet!');
             }
         }
         /* verify that no overlapping occurs if we are adding nested subnet */
         if ($section['strictMode'] == 1 && !$isFolder) {
             if ($overlap = verifyNestedSubnetOverlapping($_POST['sectionId'], $_POST['subnet'], $_POST['vrfId'], $_POST['masterSubnetId'])) {
                 $errors[] = $overlap;
             }
         }
     } else {
         if ($_POST['action'] == "edit") {
             if ($section['strictMode'] == 1 && !$isFolder) {
                 /* verify that nested subnet is inside root subnet */
                 if (!($overlap = verifySubnetNesting($_POST['masterSubnetId'], $_POST['subnet'])) && $_POST['masterSubnetId'] != 0) {
                     $errors[] = _('Nested subnet not in root subnet!');
                 }
             }
             /* for nesting - MasterId cannot be the same as subnetId! */
             if ($_POST['masterSubnetId'] == $_POST['subnetId']) {
                 $errors[] = _('Subnet cannot nest behind itself!');
             }
    //set subnet details
    $subnetDetails['action'] = "add";
    $subnetDetails['subnet'] = $_POST['subnet-' . $m];
    $subnetDetails['sectionId'] = $_POST['section-' . $m];
    $subnetDetails['description'] = $_POST['description-' . $m];
    $subnetDetails['VLAN'] = $_POST['vlan-' . $m];
    $subnetDetails['masterSubnetId'] = 0;
    //cidr
    if (verifyCidr($subnetDetails['subnet'])) {
        $errors[] = verifyCidr($subnetDetails['subnet']);
    } else {
        if (verifySubnetOverlapping($subnetDetails['sectionId'], $subnetDetails['subnet'], "000")) {
            $errors[] = verifySubnetOverlapping($subnetDetails['sectionId'], $subnetDetails['subnet'], "000");
        } else {
            if (verifyNestedSubnetOverlapping($subnetDetails['sectionId'], $subnetDetails['subnet'], "000")) {
                $errors[] = verifyNestedSubnetOverlapping($subnetDetails['sectionId'], $subnetDetails['subnet'], "000");
            } else {
                $subnetInsert[] = $subnetDetails;
            }
        }
    }
}
/* print errors if they exist or success */
if (!isset($errors)) {
    $errors2 = 0;
    //insert if all other is ok!
    foreach ($subnetInsert as $subnetDetails) {
        if (!modifySubnetDetails($subnetDetails)) {
            print '<div class="alert alert-danger alert-absolute">' . _('Failed to import subnet') . ' ' . $subnetDetails['subnet'] . '</div>';
            $errors2++;
        }