diff --git a/Netch/Controllers/DNSController.cs b/Netch/Controllers/DNSController.cs
index 902f0845..f73cdeb0 100644
--- a/Netch/Controllers/DNSController.cs
+++ b/Netch/Controllers/DNSController.cs
@@ -25,7 +25,6 @@ namespace Netch.Controllers
             aiodns_dial((int) NameList.TYPE_LIST, Encoding.UTF8.GetBytes(Path.GetFullPath(Global.Settings.AioDNS.RulePath)));
             aiodns_dial((int) NameList.TYPE_CDNS, Encoding.UTF8.GetBytes($"{Global.Settings.AioDNS.ChinaDNS}"));
             aiodns_dial((int) NameList.TYPE_ODNS, Encoding.UTF8.GetBytes($"{Global.Settings.AioDNS.OtherDNS}"));
-            aiodns_dial((int) NameList.TYPE_METH, Encoding.UTF8.GetBytes(Global.Settings.AioDNS.Protocol));
 
             if (!aiodns_init())
                 throw new Exception("AioDNS start failed");
@@ -42,14 +41,13 @@ namespace Netch.Controllers
         [DllImport("aiodns.bin", CallingConvention = CallingConvention.Cdecl)]
         public static extern void aiodns_free();
 
-        private enum NameList
+        public enum NameList
         {
             TYPE_REST,
             TYPE_ADDR,
             TYPE_LIST,
             TYPE_CDNS,
-            TYPE_ODNS,
-            TYPE_METH
+            TYPE_ODNS
         }
 
         #endregion
diff --git a/Netch/Controllers/TUNController.cs b/Netch/Controllers/TUNController.cs
index f5cfb0a1..33512c9b 100644
--- a/Netch/Controllers/TUNController.cs
+++ b/Netch/Controllers/TUNController.cs
@@ -133,11 +133,7 @@ namespace Netch.Controllers
         {
             var tasks = new[]
             {
-                Task.Run(() =>
-                {
-                    Free();
-                    // _tunInterop.Unload();
-                }),
+                Task.Run(Free),
                 Task.Run(ClearRouteTable),
                 Task.Run(DNSController.Stop)
             };
@@ -266,7 +262,9 @@ namespace Netch.Controllers
             {
                 case Action.Create:
                     result = NativeMethods.CreateRoute((int) AddressFamily.InterNetwork, ip, cidr, gateway, index, metric);
-                    ipList.Add(ipNetwork);
+                    if (result && record)
+                        ipList.Add(ipNetwork);
+
                     break;
                 case Action.Delete:
                     result = NativeMethods.DeleteRoute((int) AddressFamily.InterNetwork, ip, cidr, gateway, index, metric);
@@ -277,7 +275,9 @@ namespace Netch.Controllers
 
             Logging.Debug($"{action}Route(\"{ip}\", {cidr}, \"{gateway}\", {index}, {metric})");
             if (!result)
+            {
                 Logging.Warning($"Failed to invoke {action}Route(\"{ip}\", {cidr}, \"{gateway}\", {index}, {metric})");
+            }
 
             return result;
         }