Merge pull request #46627 from JoeAldinger/BZ-207662-main

BZ-207662-main:adds to important message

Author: stevsmit

modules/nw-externalip-about.adoc

@@ -51,7 +51,7 @@ If routed correctly, external traffic from the configured external IP address bl
 
 [IMPORTANT]
 ====
-You must ensure that the IP address block you assign terminates at one or more nodes in your cluster.
+As a cluster administrator, you must configure routing to externalIPs on both OpenShiftSDN and OVN-Kubernetes network types. You must also ensure that the IP address block you assign terminates at one or more nodes in your cluster. For more information, see link:https://kubernetes.io/docs/concepts/services-networking/service/#external-ips[*Kubernetes External IPs*].
 ====
 
 {product-title} supports both the automatic and manual assignment of IP