From 916e6d20503e01545bb06ca5fca506f2731c005b Mon Sep 17 00:00:00 2001
From: DHR60 <dehongren60@gmail.com>
Date: Sun, 27 Jul 2025 20:05:19 +0800
Subject: [PATCH] Avoids detour for private networks

---
 .../ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs  | 2 +-
 v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs
index 8e5f1a4b..e60e77fb 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs
@@ -2232,7 +2232,7 @@ public class CoreConfigSingboxService
                     continue;
                 }
             }
-            else if (outbound.detour.IsNullOrEmpty() && (!customConfig.ProxyDetour.IsNullOrEmpty()))
+            else if (outbound.detour.IsNullOrEmpty() && (!customConfig.ProxyDetour.IsNullOrEmpty()) && !Utils.IsPrivateNetwork(outbound.server ?? string.Empty))
             {
                 outbound.detour = customConfig.ProxyDetour;
             }
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
index 99c945ca..2a59d91a 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
@@ -1910,7 +1910,7 @@ public class CoreConfigV2rayService
                     continue;
                 }
             }
-            else if ((outbound.streamSettings?.sockopt?.dialerProxy.IsNullOrEmpty() == true) && (!customConfig.ProxyDetour.IsNullOrEmpty()))
+            else if ((outbound.streamSettings?.sockopt?.dialerProxy.IsNullOrEmpty() == true) && (!customConfig.ProxyDetour.IsNullOrEmpty()) && !(Utils.IsPrivateNetwork(outbound.settings?.servers?.FirstOrDefault()?.address ?? string.Empty) || Utils.IsPrivateNetwork(outbound.settings?.vnext?.FirstOrDefault()?.address ?? string.Empty)))
             {
                 outbound.streamSettings ??= new StreamSettings4Ray();
                 outbound.streamSettings.sockopt ??= new Sockopt4Ray();