diff --git a/v2rayN/v2rayN/Handler/CoreConfigSingbox.cs b/v2rayN/v2rayN/Handler/CoreConfigSingbox.cs
index 200d072e..efda6eb9 100644
--- a/v2rayN/v2rayN/Handler/CoreConfigSingbox.cs
+++ b/v2rayN/v2rayN/Handler/CoreConfigSingbox.cs
@@ -50,7 +50,7 @@ namespace v2rayN.Handler
 
                 routing(singboxConfig);
 
-                dns(singboxConfig);
+                dns(node, singboxConfig);
 
                 //statistic(singboxConfig);
 
@@ -133,7 +133,7 @@ namespace v2rayN.Handler
                     inbound.listen_port = LazyConfig.Instance.GetLocalPort(Global.InboundSocks);
                     inbound.sniff = _config.inbound[0].sniffingEnabled;
                     inbound.sniff_override_destination = _config.inbound[0].routeOnly ? false : _config.inbound[0].sniffingEnabled;
-                    inbound.domain_strategy = Utils.IsNullOrEmpty(_config.routingBasicItem.domainStrategy4Singbox) ? null: _config.routingBasicItem.domainStrategy4Singbox;
+                    inbound.domain_strategy = Utils.IsNullOrEmpty(_config.routingBasicItem.domainStrategy4Singbox) ? null : _config.routingBasicItem.domainStrategy4Singbox;
 
                     //http
                     var inbound2 = GetInbound(inbound, Global.InboundHttp, 1, false);
@@ -635,10 +635,13 @@ namespace v2rayN.Handler
 
         #endregion routing rule private
 
-        private int dns(SingboxConfig singboxConfig)
+        #region dns private
+
+        private int dns(ProfileItem node, SingboxConfig singboxConfig)
         {
             try
             {
+                Dns4Sbox? dns4Sbox;
                 if (_config.tunModeItem.enableTun)
                 {
                     string tunDNS = String.Empty;
@@ -650,12 +653,11 @@ namespace v2rayN.Handler
                     {
                         tunDNS = _config.tunModeItem.proxyDNS;
                     }
-                    if (tunDNS.IsNullOrEmpty() || Utils.ParseJson(tunDNS)?.ContainsKey("servers") == false)
+                    if (tunDNS.IsNullOrEmpty() || Utils.FromJson<Dns4Sbox>(tunDNS) is null)
                     {
                         tunDNS = Utils.GetEmbedText(Global.TunSingboxDNSFileName);
                     }
-                    var obj = Utils.ParseJson(tunDNS);
-                    singboxConfig.dns = obj;
+                    dns4Sbox = Utils.FromJson<Dns4Sbox>(tunDNS);
                 }
                 else
                 {
@@ -666,12 +668,33 @@ namespace v2rayN.Handler
                         normalDNS = "{\"servers\":[{\"address\":\"tcp://8.8.8.8\"}]}";
                     }
 
-                    var obj = Utils.ParseJson(normalDNS);
-                    if (obj?.ContainsKey("servers") == true)
-                    {
-                        singboxConfig.dns = obj;
-                    }
+                    dns4Sbox = Utils.FromJson<Dns4Sbox>(normalDNS);
                 }
+                if (dns4Sbox is null)
+                {
+                    return 0;
+                }
+                //Add the dns of the remote server domain
+                if (Utils.IsDomain(node.address))
+                {
+                    if (dns4Sbox.rules is null)
+                    {
+                        dns4Sbox.rules = new();
+                    }
+                    dns4Sbox.servers.Add(new()
+                    {
+                        tag = "local_local",
+                        address = "223.5.5.5",
+                        detour = "direct"
+                    });
+                    dns4Sbox.rules.Add(new()
+                    {
+                        server = "local_local",
+                        domain = new List<string>() { node.address }
+                    });
+                }
+
+                singboxConfig.dns = dns4Sbox;
             }
             catch (Exception ex)
             {
@@ -680,6 +703,8 @@ namespace v2rayN.Handler
             return 0;
         }
 
+        #endregion dns private
+
         private int statistic(SingboxConfig singboxConfig)
         {
             if (_config.guiItem.enableStatistics)
diff --git a/v2rayN/v2rayN/Sample/dns_singbox_normal b/v2rayN/v2rayN/Sample/dns_singbox_normal
index dc6e83a7..d75d9e97 100644
--- a/v2rayN/v2rayN/Sample/dns_singbox_normal
+++ b/v2rayN/v2rayN/Sample/dns_singbox_normal
@@ -17,11 +17,11 @@
   ],
   "rules": [
     {
-      "geosite": "cn",
+      "geosite": [ "cn" ],
       "server": "local"
     },
     {
-      "geosite": "category-ads-all",
+      "geosite": [ "category-ads-all" ],
       "server": "block"
     }
   ]}
diff --git a/v2rayN/v2rayN/Sample/tun_singbox_dns b/v2rayN/v2rayN/Sample/tun_singbox_dns
index 603122be..b0e58d69 100644
--- a/v2rayN/v2rayN/Sample/tun_singbox_dns
+++ b/v2rayN/v2rayN/Sample/tun_singbox_dns
@@ -17,12 +17,12 @@
     ],
     "rules": [
       {
-        "geosite": "cn",
+        "geosite": [ "cn" ],
         "server": "local",
         "disable_cache": true
       },
       {
-        "geosite": "category-ads-all",
+        "geosite": [ "category-ads-all" ],
         "server": "block",
         "disable_cache": true
       }
diff --git a/v2rayN/v2rayN/Tool/Utils.cs b/v2rayN/v2rayN/Tool/Utils.cs
index 10932cf5..fbbd7516 100644
--- a/v2rayN/v2rayN/Tool/Utils.cs
+++ b/v2rayN/v2rayN/Tool/Utils.cs
@@ -554,14 +554,7 @@ namespace v2rayN
                 return false;
             }
 
-            //清除要验证字符串中的空格
-            //domain = domain.TrimEx();
-
-            //模式字符串
-            string pattern = @"^(?=^.{3,255}$)[a-zA-Z0-9][-a-zA-Z0-9]{0,62}(\.[a-zA-Z0-9][-a-zA-Z0-9]{0,62})+$";
-
-            //验证
-            return IsMatch(domain, pattern);
+            return Uri.CheckHostName(domain) == UriHostNameType.Dns;
         }
 
         /// <summary>
diff --git a/v2rayN/v2rayN/ViewModels/DNSSettingViewModel.cs b/v2rayN/v2rayN/ViewModels/DNSSettingViewModel.cs
index ac31cd49..c1e1ee6c 100644
--- a/v2rayN/v2rayN/ViewModels/DNSSettingViewModel.cs
+++ b/v2rayN/v2rayN/ViewModels/DNSSettingViewModel.cs
@@ -73,8 +73,8 @@ namespace v2rayN.ViewModels
             }
             if (!Utils.IsNullOrEmpty(normalDNS2))
             {
-                var obj2 = Utils.ParseJson(normalDNS2);
-                if (obj2 == null || obj2.ContainsKey("servers") == false)
+                var obj2 = Utils.FromJson<Dns4Sbox>(normalDNS2);
+                if (obj2 == null)
                 {
                     UI.Show(ResUI.FillCorrectDNSText);
                     return;
diff --git a/v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs b/v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs
index df67105c..b809d97d 100644
--- a/v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs
+++ b/v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs
@@ -939,6 +939,7 @@ namespace v2rayN.ViewModels
                 {
                     subid = _subId,
                     configType = eConfigType,
+                    isSub = false,
                 };
             }
             else
@@ -1337,7 +1338,6 @@ namespace v2rayN.ViewModels
             {
                 //RefreshServers();
                 Reload();
-                TunModeSwitch();
             }
         }
 
@@ -1352,6 +1352,7 @@ namespace v2rayN.ViewModels
                 Reload();
             }
         }
+
         private void DNSSetting()
         {
             var ret = (new DNSSettingWindow()).ShowDialog();
@@ -1483,10 +1484,6 @@ namespace v2rayN.ViewModels
                 BlReloadEnabled = false;
             }));
 
-            //if (Global.reloadV2ray)
-            //{
-            //    _noticeHandler?.SendMessage(Global.CommandClearMsg);
-            //}
             await Task.Run(() =>
             {
                 _coreHandler.LoadCore(_config);
@@ -1620,8 +1617,8 @@ namespace v2rayN.ViewModels
             if (_config.tunModeItem.enableTun != EnableTun)
             {
                 _config.tunModeItem.enableTun = EnableTun;
+                Reload();
             }
-            TunModeSwitch();
         }
 
         private void TunModeSwitch()