diff --git a/docs/tasks/access-application-cluster/port-forward-access-application-cluster.md b/docs/tasks/access-application-cluster/port-forward-access-application-cluster.md
index 8fe3d9cf0b..909dc31e10 100644
--- a/docs/tasks/access-application-cluster/port-forward-access-application-cluster.md
+++ b/docs/tasks/access-application-cluster/port-forward-access-application-cluster.md
@@ -83,6 +83,11 @@ Connections made to local port 6379 are forwarded to port 6379 of the pod that
 is running the Redis server. With this connection in place you can use your
 local workstation to debug the database that is running in the pod.
 
+**Warning**: Due to known limitations, port forward today only works for TCP protocol.
+The support to UDP protocol is being tracked in
+[issue 47862](https://github.com/kubernetes/kubernetes/issues/47862).
+{: .warning}
+
 {% endcapture %}