diff --git a/config.xml b/config.xml
index 4346e39..1c18766 100644
--- a/config.xml
+++ b/config.xml
@@ -821,6 +821,20 @@ e+7APPmE4+Hdfyhcws1MAAAAG3Jvb3RAZ29uZG9yMi5kc3MubXl3aXJlLm9yZwEC
       <dnsserver/>
       <ntpserver/>
     </opt1>
+    <opt4>
+      <enable>1</enable>
+      <ddnsdomainalgorithm>hmac-md5</ddnsdomainalgorithm>
+      <numberoptions>
+        <item/>
+      </numberoptions>
+      <range>
+        <from>10.0.40.100</from>
+        <to>10.0.40.199</to>
+      </range>
+      <winsserver/>
+      <dnsserver/>
+      <ntpserver/>
+    </opt4>
   </dhcpd>
   <snmpd>
     <syslocation/>
@@ -2225,7 +2239,7 @@ e+7APPmE4+Hdfyhcws1MAAAAG3Jvb3RAZ29uZG9yMi5kc3MubXl3aXJlLm9yZwEC&#xD;
   </widgets>
   <revision>
     <username>root@10.0.1.131</username>
-    <time>1707426936.999</time>
+    <time>1707426961.2042</time>
     <description>/services_dhcp.php made changes</description>
   </revision>
   <OPNsense>