CNV-34492: Added note about IP address management support

Author: Shikha Jhala

virt/vm_networking/virt-connecting-vm-to-ovn-secondary-network.adoc

@@ -21,6 +21,11 @@ To configure an OVN-Kubernetes secondary network and attach a VM to that network
 
 You can create an OVN-Kubernetes flat layer 2 network attachment definition (NAD) by using the {product-title} web console or the CLI.
 
+[NOTE]
+====
+Configuring IP address management (IPAM) in a network attachment definition for virtual machines is not supported.
+====
+
 include::modules/virt-creating-layer2-nad-cli.adoc[leveloffset=+2]
 
 [id="attaching-vm-to-ovn-secondary-nw"]