diff --git a/MediaBrowser.Common/Net/IPNetAddress.cs b/MediaBrowser.Common/Net/IPNetAddress.cs
index ac3396a9f..de72d978e 100644
--- a/MediaBrowser.Common/Net/IPNetAddress.cs
+++ b/MediaBrowser.Common/Net/IPNetAddress.cs
@@ -167,6 +167,11 @@ namespace MediaBrowser.Common.Net
                 address = address.MapToIPv4();
             }
 
+            if (address.AddressFamily != AddressFamily)
+            {
+                return false;
+            }
+
             var (altAddress, altPrefix) = NetworkAddressOf(address, PrefixLength);
             return NetworkAddress.Address.Equals(altAddress) && NetworkAddress.PrefixLength >= altPrefix;
         }
diff --git a/tests/Jellyfin.Networking.Tests/NetworkManagerTests.cs b/tests/Jellyfin.Networking.Tests/NetworkManagerTests.cs
index 61f913252..df2a2ca70 100644
--- a/tests/Jellyfin.Networking.Tests/NetworkManagerTests.cs
+++ b/tests/Jellyfin.Networking.Tests/NetworkManagerTests.cs
@@ -45,6 +45,7 @@ namespace Jellyfin.Networking.Tests
         [InlineData("fd23:184f:2029:0::/56", "fd24:184f:2029:0:3139:7386:67d7:d517")]
         [InlineData("fd23:184f:2029:0::/56, !fd23:184f:2029:0:3139:7386:67d7:d500/120", "fd23:184f:2029:0:3139:7386:67d7:d517")]
         [InlineData("fd23:184f:2029:0::/56", "192.168.10.60")]
+        [InlineData("2001:abcd:abcd:6b40::0/60", "192.168.10.60")]
         public void InNetwork_False_Success(string network, string value)
         {
             var ip = IPAddress.Parse(value);