diff --git a/Netch/Controllers/DNSController.cs b/Netch/Controllers/DNSController.cs
index f73cdeb0..c704cdbb 100644
--- a/Netch/Controllers/DNSController.cs
+++ b/Netch/Controllers/DNSController.cs
@@ -1,7 +1,6 @@
 using System;
 using System.IO;
-using System.Runtime.InteropServices;
-using System.Text;
+using static Netch.Interops.AioDNSInterops;
 
 namespace Netch.Controllers
 {
@@ -11,7 +10,7 @@ namespace Netch.Controllers
 
         public void Stop()
         {
-            aiodns_free();
+            Free();
         }
 
         /// <summary>
@@ -20,36 +19,14 @@ namespace Netch.Controllers
         /// <returns></returns>
         public void Start()
         {
-            aiodns_dial((int) NameList.TYPE_REST, null);
-            aiodns_dial((int) NameList.TYPE_ADDR, Encoding.UTF8.GetBytes($"{Global.Settings.LocalAddress}:{Global.Settings.AioDNS.ListenPort}"));
-            aiodns_dial((int) NameList.TYPE_LIST, Encoding.UTF8.GetBytes(Path.GetFullPath(Global.Settings.AioDNS.RulePath)));
-            aiodns_dial((int) NameList.TYPE_CDNS, Encoding.UTF8.GetBytes($"{Global.Settings.AioDNS.ChinaDNS}"));
-            aiodns_dial((int) NameList.TYPE_ODNS, Encoding.UTF8.GetBytes($"{Global.Settings.AioDNS.OtherDNS}"));
+            Dial(NameList.TYPE_REST, "");
+            Dial(NameList.TYPE_ADDR, $"{Global.Settings.LocalAddress}:{Global.Settings.AioDNS.ListenPort}");
+            Dial(NameList.TYPE_LIST, Path.GetFullPath(Global.Settings.AioDNS.RulePath));
+            Dial(NameList.TYPE_CDNS, $"{Global.Settings.AioDNS.ChinaDNS}");
+            Dial(NameList.TYPE_ODNS, $"{Global.Settings.AioDNS.OtherDNS}");
 
-            if (!aiodns_init())
+            if (!Init())
                 throw new Exception("AioDNS start failed");
         }
-
-        #region NativeMethods
-
-        [DllImport("aiodns.bin", CallingConvention = CallingConvention.Cdecl)]
-        public static extern bool aiodns_dial(int name, byte[]? value);
-
-        [DllImport("aiodns.bin", CallingConvention = CallingConvention.Cdecl)]
-        public static extern bool aiodns_init();
-
-        [DllImport("aiodns.bin", CallingConvention = CallingConvention.Cdecl)]
-        public static extern void aiodns_free();
-
-        public enum NameList
-        {
-            TYPE_REST,
-            TYPE_ADDR,
-            TYPE_LIST,
-            TYPE_CDNS,
-            TYPE_ODNS
-        }
-
-        #endregion
     }
 }
\ No newline at end of file
diff --git a/Netch/Controllers/NFController.cs b/Netch/Controllers/NFController.cs
index 75441838..b871b490 100644
--- a/Netch/Controllers/NFController.cs
+++ b/Netch/Controllers/NFController.cs
@@ -8,7 +8,7 @@ using Netch.Servers.Shadowsocks;
 using Netch.Servers.Socks5;
 using Netch.Utils;
 using nfapinet;
-using static Netch.Controllers.RedirectorInterop;
+using static Netch.Interops.RedirectorInterop;
 
 namespace Netch.Controllers
 {
diff --git a/Netch/Controllers/TUNController.cs b/Netch/Controllers/TUNController.cs
index c370d1dc..d5c3faf0 100644
--- a/Netch/Controllers/TUNController.cs
+++ b/Netch/Controllers/TUNController.cs
@@ -8,7 +8,7 @@ using System.Threading.Tasks;
 using Netch.Models;
 using Netch.Servers.Socks5;
 using Netch.Utils;
-using static Netch.Controllers.TUNInterop;
+using static Netch.Interops.TUNInterop;
 
 namespace Netch.Controllers
 {
diff --git a/Netch/Interops/AioDNSInterops.cs b/Netch/Interops/AioDNSInterops.cs
new file mode 100644
index 00000000..f2a8cc5e
--- /dev/null
+++ b/Netch/Interops/AioDNSInterops.cs
@@ -0,0 +1,33 @@
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace Netch.Interops
+{
+    public static class AioDNSInterops
+    {
+        private const string aiodns_bin = "aiodns.bin";
+
+        public static bool Dial(NameList name, string value)
+        {
+            return aiodns_dial(name, Encoding.UTF8.GetBytes(value));
+        }
+
+        [DllImport(aiodns_bin, CallingConvention = CallingConvention.Cdecl)]
+        private static extern bool aiodns_dial(NameList name, byte[] value);
+
+        [DllImport(aiodns_bin, EntryPoint = "aiodns_init", CallingConvention = CallingConvention.Cdecl)]
+        public static extern bool Init();
+
+        [DllImport(aiodns_bin, EntryPoint = "aiodns_free", CallingConvention = CallingConvention.Cdecl)]
+        public static extern void Free();
+
+        public enum NameList
+        {
+            TYPE_REST,
+            TYPE_ADDR,
+            TYPE_LIST,
+            TYPE_CDNS,
+            TYPE_ODNS
+        }
+    }
+}
\ No newline at end of file
diff --git a/Netch/Controllers/RedirectorInterop.cs b/Netch/Interops/RedirectorInterop.cs
similarity index 98%
rename from Netch/Controllers/RedirectorInterop.cs
rename to Netch/Interops/RedirectorInterop.cs
index f1353ffd..6051ca2c 100644
--- a/Netch/Controllers/RedirectorInterop.cs
+++ b/Netch/Interops/RedirectorInterop.cs
@@ -1,7 +1,7 @@
 using System.Runtime.InteropServices;
 using Netch.Utils;
 
-namespace Netch.Controllers
+namespace Netch.Interops
 {
     public static class RedirectorInterop
     {
diff --git a/Netch/Controllers/TUNInterop.cs b/Netch/Interops/TUNInterop.cs
similarity index 97%
rename from Netch/Controllers/TUNInterop.cs
rename to Netch/Interops/TUNInterop.cs
index 540aa280..376f1658 100644
--- a/Netch/Controllers/TUNInterop.cs
+++ b/Netch/Interops/TUNInterop.cs
@@ -2,9 +2,9 @@ using System.Runtime.InteropServices;
 using System.Text;
 using Netch.Utils;
 
-namespace Netch.Controllers
+namespace Netch.Interops
 {
-    public class TUNInterop
+    public static class TUNInterop
     {
         public enum NameList
         {
diff --git a/Netch/Models/TunAdapter.cs b/Netch/Models/TunAdapter.cs
index eb72f45c..1ae12158 100644
--- a/Netch/Models/TunAdapter.cs
+++ b/Netch/Models/TunAdapter.cs
@@ -2,6 +2,8 @@
 using System.Linq;
 using System.Net;
 using System.Net.NetworkInformation;
+using Netch.Controllers;
+using Netch.Interops;
 using Netch.Utils;
 
 namespace Netch.Models
diff --git a/Netch/NativeMethods.cs b/Netch/NativeMethods.cs
index f43dc2e0..a437fa2d 100644
--- a/Netch/NativeMethods.cs
+++ b/Netch/NativeMethods.cs
@@ -43,11 +43,5 @@ namespace Netch
 
         [DllImport("dnsapi", EntryPoint = "DnsFlushResolverCache")]
         public static extern uint FlushDNSResolverCache();
-
-        [DllImport("kernel32.dll")]
-        public static extern bool AllocConsole();
-
-        [DllImport("kernel32.dll")]
-        public static extern bool AttachConsole(int dwProcessId);
     }
 }
\ No newline at end of file
diff --git a/Netch/Netch.cs b/Netch/Netch.cs
index 27cf0f2d..883d838c 100644
--- a/Netch/Netch.cs
+++ b/Netch/Netch.cs
@@ -23,10 +23,10 @@ namespace Netch
         public static void Main(string[] args)
         {
 #if DEBUG
-            AttachConsole();
+            AttachAllocConsole();
 #else
             if (args.Contains(Constants.Parameter.Console))
-                AttachConsole();
+                AttachAllocConsole();
 #endif
 
             if (args.Contains(Constants.Parameter.ForceUpdate))
@@ -93,10 +93,10 @@ namespace Netch
             Application.Run(Global.MainForm);
         }
 
-        private static void AttachConsole()
+        private static void AttachAllocConsole()
         {
-            if (!NativeMethods.AttachConsole(-1))
-                NativeMethods.AllocConsole();
+            if (!AttachConsole(ATTACH_PARENT_PROCESS))
+                AllocConsole();
         }
 
         public static void Application_OnException(object sender, ThreadExceptionEventArgs e)