OSDOCS-15290: Added GA RN to 4.16 for IPv6 unsolicited neighbor advertisements

Author: dfitzmau

release_notes/ocp-4-16-release-notes.adoc

@@ -699,6 +699,11 @@ For more information, see xref:../post_installation_configuration/changing-cloud
 [id="ocp-4-16-networking_{context}"]
 === Networking
 
+[id="ocp-4-16-ipv6-default-ipvlan_{context}"]
+==== IPv6 unsolicited neighbor advertisements on IPVLAN CNI plugin (General Availability)
+
+Pods created by using the `ipvlan` CNI plugin, where the IP address management CNI plugin has assigned IPs, now send IPv6 unsolicited neighbor advertisements by default onto the network.
+
 [id="ocp-4-16-sr-iov-network-metrics-exporter_{context}"]
 ==== Enabling the SR-IOV network metrics exporter