From 821473557c7747e4029cddc4f562ae3f207508d7 Mon Sep 17 00:00:00 2001
From: BaronGreenback <jimcartlidge@yahoo.co.uk>
Date: Tue, 19 Jan 2021 11:31:40 +0000
Subject: [PATCH] Changed mapping logic

---
 Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs b/Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs
index 0a7ae9a410..0e68c523fc 100644
--- a/Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs
+++ b/Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs
@@ -352,7 +352,8 @@ namespace Jellyfin.Server.Extensions
                 return;
             }
 
-            if (NetworkManager.SystemIP6Enabled && addr.AddressFamily == AddressFamily.InterNetwork)
+            // In order for dual-mode sockets to be used, IP6 has to be enabled in JF and an interface has to have an IP6 address.
+            if (NetworkManager.SystemIP6Enabled && addr.AddressFamily == AddressFamily.InterNetwork && config.EnableIPV6)
             {
                 // If the server is using dual-mode sockets, IPv4 addresses are supplied in an IPv6 format.
                 // https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/proxy-load-balancer?view=aspnetcore-5.0 .