From cf5913748109cfc50529297a9b1dac5a8722ac60 Mon Sep 17 00:00:00 2001
From: DHR60 <dehongren60@gmail.com>
Date: Sat, 12 Apr 2025 10:00:18 +0800
Subject: [PATCH] fix dns leak (#7110)

---
 v2rayN/ServiceLib/Models/V2rayConfig.cs                         | 1 +
 v2rayN/ServiceLib/Sample/dns_v2ray_normal                       | 1 +
 v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs | 1 +
 3 files changed, 3 insertions(+)

diff --git a/v2rayN/ServiceLib/Models/V2rayConfig.cs b/v2rayN/ServiceLib/Models/V2rayConfig.cs
index d080d14c..2e5ed4b4 100644
--- a/v2rayN/ServiceLib/Models/V2rayConfig.cs
+++ b/v2rayN/ServiceLib/Models/V2rayConfig.cs
@@ -210,6 +210,7 @@ public class DnsServer4Ray
 {
     public string? address { get; set; }
     public List<string>? domains { get; set; }
+    public bool? skipFallback { get; set; }
 }
 
 public class Routing4Ray
diff --git a/v2rayN/ServiceLib/Sample/dns_v2ray_normal b/v2rayN/ServiceLib/Sample/dns_v2ray_normal
index 9aecbd6e..3f9c8b22 100644
--- a/v2rayN/ServiceLib/Sample/dns_v2ray_normal
+++ b/v2rayN/ServiceLib/Sample/dns_v2ray_normal
@@ -15,6 +15,7 @@
     },
     {
       "address": "223.5.5.5",
+      "skipFallback": true,
       "domains": [
         "geosite:cn"
       ],
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
index 1bd23872..95511836 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
@@ -1185,6 +1185,7 @@ public class CoreConfigV2rayService
                 var dnsServer = new DnsServer4Ray()
                 {
                     address = string.IsNullOrEmpty(dNSItem?.DomainDNSAddress) ? Global.DomainDNSAddress.FirstOrDefault() : dNSItem?.DomainDNSAddress,
+                    skipFallback = true,
                     domains = [node.Address]
                 };
                 servers.AsArray().Add(JsonUtils.SerializeToNode(dnsServer));