diff --git a/src/opnsense/mvc/app/models/OPNsense/IPsec/IPsec.php b/src/opnsense/mvc/app/models/OPNsense/IPsec/IPsec.php
index 5d612ce4f..e0a6a1521 100644
--- a/src/opnsense/mvc/app/models/OPNsense/IPsec/IPsec.php
+++ b/src/opnsense/mvc/app/models/OPNsense/IPsec/IPsec.php
@@ -223,6 +223,10 @@ class IPsec extends BaseModel
                 if ($target_key == '28672') {
                     /* Unity login banner, needs to be wrapped? */
                     $result[$target_key] = '"' . str_replace(['\\', '"'], '', (string)$item) . '"';
+                } elseif ($target_key == '28675') {
+                    /* 28675 (splitdns name) is equal/similar to 25 (INTERNAL_DNS_DOMAIN) */
+                    $result['25'] = (string)$item;
+                    $result[$target_key] = (string)$item;
                 } else {
                     $result[$target_key] = (string)$item;
                 }
diff --git a/src/opnsense/mvc/app/models/OPNsense/IPsec/IPsec.xml b/src/opnsense/mvc/app/models/OPNsense/IPsec/IPsec.xml
index b07a483f2..cfb00804c 100644
--- a/src/opnsense/mvc/app/models/OPNsense/IPsec/IPsec.xml
+++ b/src/opnsense/mvc/app/models/OPNsense/IPsec/IPsec.xml
@@ -113,7 +113,6 @@
                     <!-- UNITY_DEF_DOMAIN -->
                     <x_28674 type="TextField"/>
                     <x_28675 type="TextField"/>
-                    <x_25 type="TextField"/>
                     <x_28672 type="TextField"/>
                     <x_28673 type="BooleanField"/>
                     <x_28679 type="OptionField">