Merge pull request openshift#31358 from mikemckiernan/fix-hn-ovnk-again

BZ#1927841: host network routers and OVN-K

modules/nw-networkpolicy-project-defaults.adoc

@@ -31,7 +31,12 @@ configured for your cluster. The default template name is `project-request`.
 
 . In the template, add each `NetworkPolicy` object as an element to the `objects` parameter. The `objects` parameter accepts a collection of one or more objects.
 +
-In the following example, the `objects` parameter collection includes several `NetworkPolicy` objects:
+In the following example, the `objects` parameter collection includes several `NetworkPolicy` objects.
++
+[IMPORTANT]
+====
+For the OVN-Kubernetes network provider plug-in, when the Ingress Controller is configured to use the `HostNetwork` endpoint publishing strategy, there is no supported way to apply network policy so that ingress traffic is allowed and all other traffic is denied.
+====
 +
 [source,yaml]
 ----