diff --git a/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbCip.Tests/AbCipDeviceRefusalTests.cs b/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbCip.Tests/AbCipDeviceRefusalTests.cs
index 2cb690f5..6803d3ab 100644
--- a/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbCip.Tests/AbCipDeviceRefusalTests.cs
+++ b/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbCip.Tests/AbCipDeviceRefusalTests.cs
@@ -2,6 +2,7 @@ using Shouldly;
 using Xunit;
 using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
 using ZB.MOM.WW.OtOpcUa.Driver.Ab.Transport;
+using ZB.MOM.WW.OtOpcUa.Driver.Ab.Transport.Tests.Fakes;
 
 namespace ZB.MOM.WW.OtOpcUa.Driver.AbCip.Tests;
 
@@ -178,4 +179,50 @@ public sealed class AbCipDeviceRefusalTests
         factory.Tags["ReadOnlyTag"].Disposed.ShouldBeFalse();
         drv.GetHealth().State.ShouldBe(DriverState.Healthy);
     }
+
+    /// <summary>
+    ///     L4 end to end over the REAL native runtime + a private pool: a renamed tag (CIP 0x04) that is the device's
+    ///     ONLY lease holder used to be evicted every poll — the last release, so Forward Close, then a throttled Forward
+    ///     Open on the next poll. One runtime and one Forward Open across N polls and no Forward Close proves no churn.
+    /// </summary>
+    [Fact]
+    public async Task A_native_NotFound_tag_causes_no_runtime_or_connection_churn()
+    {
+        await using var target = new FakeCipTarget();
+        target.ConnectedHandler = req => Task.FromResult<byte[]?>(
+            req[0] == 0x52 ? [0xD2, 0x00, 0x04, 0x00] : target.ServiceReply(req));
+        var host = $"ab://127.0.0.1:{target.Port}/1,0";
+        var creates = 0;
+        var native = new NativeAbCipTagFactory(new DeviceSessionPool());
+        var factory = new CountingFactory(p => { Interlocked.Increment(ref creates); return native.Create(p); });
+        var drv = new AbCipDriver(new AbCipDriverOptions
+        {
+            Devices = [new AbCipDeviceOptions(host, AbCipPlcFamily.ControlLogix)],
+            RawTags = AbCipRawTags.From(new AbCipTagDefinition("Renamed", host, "Renamed", AbCipDataType.DInt)),
+            Probe = new AbCipProbeOptions { Enabled = false },
+            Timeout = TimeSpan.FromSeconds(5),
+        }, "abcip-l4-native", factory);
+        await drv.InitializeAsync("{}", CancellationToken.None);
+        try
+        {
+            for (var n = 0; n < 5; n++)
+                (await drv.ReadAsync(["Renamed"], CancellationToken.None))[0].StatusCode
+                    .ShouldBe(AbCipStatusMapper.BadNodeIdUnknown);
+
+            Volatile.Read(ref creates).ShouldBe(1);
+            target.ForwardOpens.ShouldBe(1);
+            target.ForwardCloses.ShouldBe(0);
+            target.ConnectedRequests.ShouldBeGreaterThanOrEqualTo(5); // positive control: every poll hit the wire
+            drv.GetHealth().State.ShouldBe(DriverState.Healthy);
+        }
+        finally
+        {
+            await drv.DisposeAsync();
+        }
+    }
+
+    private sealed class CountingFactory(Func<AbCipTagCreateParams, IAbCipTagRuntime> create) : IAbCipTagFactory
+    {
+        public IAbCipTagRuntime Create(AbCipTagCreateParams createParams) => create(createParams);
+    }
 }