From a774ccf426e15ddb7cc248c2516825778233dab9 Mon Sep 17 00:00:00 2001
From: Robin Dadswell <19610103+RobinDadswell@users.noreply.github.com>
Date: Thu, 21 Oct 2021 21:04:27 +0100
Subject: [PATCH] Fixed: Real IP logging when IPv4 is mapped as IPv6

(cherry picked from commit 782bdcc0a9c118f4b7a25fc90a966a6381a7f248)
---
 src/Radarr.Http/Extensions/RequestExtensions.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Radarr.Http/Extensions/RequestExtensions.cs b/src/Radarr.Http/Extensions/RequestExtensions.cs
index aab072807f..f33d43c641 100644
--- a/src/Radarr.Http/Extensions/RequestExtensions.cs
+++ b/src/Radarr.Http/Extensions/RequestExtensions.cs
@@ -156,6 +156,12 @@ public static string GetRemoteIP(this HttpRequest request)
             }
 
             var remoteIP = request.HttpContext.Connection.RemoteIpAddress;
+
+            if (remoteIP.IsIPv4MappedToIPv6)
+            {
+                remoteIP = remoteIP.MapToIPv4();
+            }
+
             var remoteAddress = remoteIP.ToString();
 
             // Only check if forwarded by a local network reverse proxy