<?=

$form->field($model, 'address_families')->dropDownList(['ip' => 'ip',
 'ipv6' => 'ipv6',
 'l2vpn' => 'l2vpn',
 'l2vpn-cisco' => 'l2vpn-cisco',
 'vpnv4' => 'vpnv4',
], ['multiple' => true]);
?>
<?php $internames['none'] = ''; ?>
<?= $form->field($model, 'update_source')->dropDownList($internames); ?>
<?=

$form->field($model, 'cisco_vpls_nlri_len_fmt')->dropDownList(['auto-bits' => 'auto-bits',
    'auto-bytes' => 'auto-bytes',
    'bits' => 'bits',
    'bytes' => 'bytes',
]);
?>