diff --git a/v2rayN/ServiceLib/Models/SingboxConfig.cs b/v2rayN/ServiceLib/Models/SingboxConfig.cs
index 2c616776..f0e74e19 100644
--- a/v2rayN/ServiceLib/Models/SingboxConfig.cs
+++ b/v2rayN/ServiceLib/Models/SingboxConfig.cs
@@ -1,3 +1,5 @@
+using System.Text.Json.Serialization;
+
 namespace ServiceLib.Models;
 
 public class SingboxConfig
@@ -226,7 +228,7 @@ public class Server4Sbox
     public string? type { get; set; }
     public string? server { get; set; }
     public string? server_resolver { get; set; }
-    //public string? interface { get; set; }
+    [JsonPropertyName("interface")] public string? Interface { get; set; }
 }
 
 public class Experimental4Sbox
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs
index 303c57a3..a99678b1 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs
@@ -1314,7 +1314,7 @@ public class CoreConfigSingboxService
         var tag = "local_local";
         var localDnsAddress = string.IsNullOrEmpty(dNSItem?.DomainDNSAddress) ? Global.SingboxDomainDNSAddress.FirstOrDefault() : dNSItem?.DomainDNSAddress;
         string? localDnsType = null;
-        //string? dhcpDnsInterface = null;
+        string? dhcpDnsInterface = null;
         if (localDnsAddress == "local")
         {
             localDnsType = "local";
@@ -1323,8 +1323,12 @@ public class CoreConfigSingboxService
         else if (localDnsAddress.StartsWith("dhcp") && localDnsAddress.Length > 7)
         {
             localDnsType = "dhcp";
-            // // dhcp://
-            // dhcpDnsInterface = localDnsAddress.Substring(7);
+            // dhcp://
+            dhcpDnsInterface = localDnsAddress.Substring(7);
+            if (dhcpDnsInterface == "auto")
+            {
+                dhcpDnsInterface = null;
+            }
             localDnsAddress = null;
         }
         else if (localDnsAddress.StartsWith("tcp") && localDnsAddress.Length > 6)
@@ -1360,7 +1364,8 @@ public class CoreConfigSingboxService
         {
             tag = tag,
             type = localDnsType,
-            server = localDnsAddress
+            server = localDnsAddress,
+            Interface = dhcpDnsInterface
         });
         dns4Sbox.rules.Insert(0, new()
         {