new: [metafields-types:ipv6] Support of ipv6

src/Lib/default/meta_fields_types/IPv6Type.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace MetaFieldsTypes;
+
+use MetaFieldsTypes\IPv4Type;
+
+class IPv6Type extends IPv4Type
+{
+    public const TYPE = 'ipv6';
+
+    public function __construct()
+    {
+        parent::__construct();
+    }
+
+    protected function _isValidIP(string $value): bool
+    {
+        return filter_var($value, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6);
+    }
+
+}

src/Model/Behavior/MetaFieldsBehavior.php

@@ -12,8 +12,10 @@ use Cake\Database\Expression\QueryExpression;
 
 use MetaFieldsTypes\TextType;
 use MetaFieldsTypes\IPv4Type;
+use MetaFieldsTypes\IPv6Type;
 require_once(APP . 'Lib' . DS . 'default' . DS . 'meta_fields_types' . DS . 'TextType.php');
 require_once(APP . 'Lib' . DS . 'default' . DS . 'meta_fields_types' . DS . 'IPv4Type.php');
+require_once(APP . 'Lib' . DS . 'default' . DS . 'meta_fields_types' . DS . 'IPv6Type.php');
 
 class MetaFieldsBehavior extends Behavior
 {
@@ -63,6 +65,7 @@ class MetaFieldsBehavior extends Behavior
         $typeHandlers = [
             new TextType(),
             new IPv4Type(),
+            new IPv6Type(),
         ];
         foreach ($typeHandlers as $handler) {
             $this->typeHandlers[$handler::TYPE] = $handler;