Try to remove the tun device when restarting the service in Windows

https://github.com/2dust/v2rayN/pull/6561

v2rayN/ServiceLib/Common/WindowsUtils.cs

@@ -1,4 +1,7 @@
-using Microsoft.Win32;
+using System.Diagnostics;
+using System.Security.Cryptography;
+using System.Text;
+using Microsoft.Win32;
 
 namespace ServiceLib.Common
 {
@@ -50,5 +53,24 @@ namespace ServiceLib.Common
                 regKey?.Close();
             }
         }
+
+        public static async Task RemoveTunDevice()
+        {
+	        try
+	        {
+		        var sum = MD5.HashData(Encoding.UTF8.GetBytes("wintunsingbox_tun"));
+		        var guid = new Guid(sum);
+		        var pnpUtilPath = @"C:\Windows\System32\pnputil.exe";
+		        var arg = $$""" /remove-device  "SWD\Wintun\{{{guid}}}" """;
+
+				// Try to remove the device
+				await Utils.GetCliWrapOutput(pnpUtilPath, arg);
+				 
+			}
+			catch (Exception ex)
+			{
+				Logging.SaveLog(_tag, ex);
+			}
+		}
 	}
 }

v2rayN/ServiceLib/Handler/CoreHandler.cs

@@ -1,4 +1,4 @@
-using System.Diagnostics;
+using System.Diagnostics;
 using System.Text;
 
 namespace ServiceLib.Handler
@@ -83,6 +83,13 @@ namespace ServiceLib.Handler
             UpdateFunc(false, string.Format(ResUI.StartService, DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss")));
             await CoreStop();
             await Task.Delay(100);
+
+			if (Utils.IsWindows() && _config.TunModeItem.EnableTun)
+			{
+				await Task.Delay(100);
+				await WindowsUtils.RemoveTunDevice();
+			}
+
 			await CoreStart(node);
             await CoreStartPreService(node);
             if (_process != null)

v2rayN/v2rayN/Common/WindowsUtils.cs

@@ -1,4 +1,4 @@
-using Microsoft.Win32;
+using Microsoft.Win32;
 using System.Diagnostics;
 using System.Drawing;
 using System.Runtime.InteropServices;
@@ -64,36 +64,7 @@ namespace v2rayN
                 BitmapSizeOptions.FromEmptyOptions());
         }
 
-        public static void RemoveTunDevice()
-        {
-            try
-            {
-                var sum = MD5.HashData(Encoding.UTF8.GetBytes("wintunsingbox_tun"));
-                var guid = new Guid(sum);
-                string pnputilPath = @"C:\Windows\System32\pnputil.exe";
-                string arg = $$""" /remove-device  "SWD\Wintun\{{{guid}}}" """;
        
-                // Try to remove the device
-                Process proc = new()
-                {
-                    StartInfo = new()
-                    {
-                        FileName = pnputilPath,
-                        Arguments = arg,
-                        RedirectStandardOutput = true,
-                        UseShellExecute = false,
-                        CreateNoWindow = true
-                    }
-                };
-
-                proc.Start();
-                var output = proc.StandardOutput.ReadToEnd();
-                proc.WaitForExit();
-            }
-            catch
-            {
-            }
-        }
 
         public static void SetDarkBorder(Window window, string? theme)
         {