diff --git a/v2rayN/ServiceLib/Global.cs b/v2rayN/ServiceLib/Global.cs
index c0c99750..e3be7004 100644
--- a/v2rayN/ServiceLib/Global.cs
+++ b/v2rayN/ServiceLib/Global.cs
@@ -464,9 +464,11 @@ public class Global
     public static readonly List<int> TunMtus =
     [
         1280,
-            1408,
-            1500,
-            9000
+        1408,
+        1500,
+        4064,
+        9000,
+        65535
     ];
 
     public static readonly List<string> TunStacks =