Removed systemIp6 functionality.

Jellyfin.Networking/Manager/NetworkManager.cs

@@ -129,16 +129,6 @@ namespace Jellyfin.Networking.Manager
         /// </summary>
         public static string MockNetworkSettings { get; set; } = string.Empty;
 
-        /// <summary>
-        /// Gets or sets a value indicating whether the system has IP4 is enabled.
-        /// </summary>
-        public static bool SystemIP4Enabled { get; set; }
-
-        /// <summary>
-        /// Gets or sets a value indicating whether the system has IP6 is enabled.
-        /// </summary>
-        public static bool SystemIP6Enabled { get; set; }
-
         /// <summary>
         /// Gets or sets a value indicating whether IP6 is enabled.
         /// </summary>
@@ -1059,7 +1049,6 @@ namespace Jellyfin.Networking.Manager
                             {
                                 if (info.Address.AddressFamily == AddressFamily.InterNetwork)
                                 {
-                                    SystemIP4Enabled = true;
                                     if (IsIP4Enabled)
                                     {
                                         IPNetAddress nw = new IPNetAddress(info.Address, IPObject.MaskToCidr(info.IPv4Mask))
@@ -1084,7 +1073,6 @@ namespace Jellyfin.Networking.Manager
                                 }
                                 else if (info.Address.AddressFamily == AddressFamily.InterNetworkV6)
                                 {
-                                    SystemIP6Enabled = true;
                                     if (IsIP6Enabled)
                                     {
                                         IPNetAddress nw = new IPNetAddress(info.Address, (byte)info.PrefixLength)

Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs

@@ -353,7 +353,7 @@ namespace Jellyfin.Server.Extensions
             }
 
             // 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 (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 .

tests/Jellyfin.Api.Tests/ParseNetworkTests.cs

@@ -30,7 +30,6 @@ namespace Jellyfin.Api.Tests
         public void TestNetworks(bool ip4, bool ip6, string hostList, string match)
         {
             using var nm = CreateNetworkManager();
-            NetworkManager.SystemIP6Enabled = ip6;
 
             var settings = new NetworkConfiguration
             {