function build_parent_list()
{
    global $portlist;
    $list = array();
    foreach ($portlist as $ifn => $ifinfo) {
        if (is_jumbo_capable($ifn)) {
            $list[$ifn] = $ifn . ' (' . $ifinfo['mac'] . ')';
        }
    }
    return $list;
}

function build_interfaces_list()
{
    global $portlist;
    $list = array();
    foreach ($portlist as $ifn => $ifinfo) {
        if (is_jumbo_capable($ifn)) {
            $list[$ifn] = $ifn . " (" . $ifinfo['mac'] . ")";
        }
    }
    return $list;
}

function build_interfaces_list()
{
    global $portlist;
    $list = array();
    foreach ($portlist as $ifn => $ifinfo) {
        if (is_jumbo_capable($ifn)) {
            $list[$ifn] = $ifn . " (" . $ifinfo['mac'] . ")";
            $iface = convert_real_interface_to_friendly_interface_name($ifn);
            if (isset($iface) && strlen($iface) > 0) {
                $list[$ifn] .= " - {$iface}";
            }
        }
    }
    return $list;
}

            }
            write_config();
            if ($confif != "") {
                interface_configure($confif);
            }
            header("Location: interfaces_vlan.php");
            exit;
        }
    }
}
$pgtitle = array(gettext("Interfaces"), gettext("VLAN"), gettext("Edit"));
$shortcut_section = "interfaces";
include "head.inc";
if ($input_errors) {
    print_input_errors($input_errors);
}
require_once 'classes/Form.class.php';
$form = new Form();
$section = new Form_Section('Interface VLAN	Edit');
$section->addInput(new Form_Select('if', 'Parent Interface', $pconfig['if'], array_combine(array_keys($portlist), array_map(function ($key, $value) {
    return is_jumbo_capable($key) ? "{$key} ({$value['mac']})" : $value;
}, array_keys($portlist), array_values($portlist))), false))->setWidth(6)->setHelp('Only VLAN capable interfaces will be shown.');
$section->addInput(new Form_Input('tag', 'VLAN Tag', 'text', $pconfig['tag'], ['placeholder' => '1']))->setWidth(6)->setHelp(gettext('802.1Q VLAN tag (between 1 and 4094).'));
$section->addInput(new Form_Input('descr', 'Description', 'text', $pconfig['descr'], ['placeholder' => 'Description']))->setWidth(6)->setHelp('You may enter a group description here ' . 'for your reference (not parsed).');
$form->addGlobal(new Form_Input('vlanif', 'vlanif', 'hidden', $pconfig['vlanif']));
if (isset($id) && $a_vlans[$id]) {
    $form->addGlobal(new Form_Input('id', 'id', 'hidden', $id));
}
$form->add($section);
print $form;
include "foot.inc";