OCPBUGS-38352: Updated the Supported network plugin feature matrix table

Author: dfitzmau

modules/nw-ovn-kubernetes-matrix.adoc

@@ -26,6 +26,10 @@ ifeval::["{context}" == "about-ovn-kubernetes"]
 
 |IPv6|Supported ^[3]^ ^[4]^|Not supported
 
+|IPv6 single-stack networking|Supported| Not supported ^[3]^ ^[4]^
+
+|IPv6 dual-stack networking|Supported|Not supported
+
 |Kubernetes network policy|Supported|Supported
 
 |Kubernetes network policy logs|Supported|Not supported
@@ -47,7 +51,9 @@ ifeval::["{context}" == "about-openshift-sdn"]
 
 |IPsec encryption|Not supported|Supported
 
-|IPv6|Not supported|Supported ^[3]^ ^[4]^
+|IPv6 single-stack networking|Not supported|Supported ^[3]^ ^[4]^
+
+|IPv6 dual-stack networking|Not supported|Supported
 
 |Kubernetes network policy|Supported|Supported
 
@@ -64,7 +70,7 @@ endif::[]
 
 2. Egress router for OVN-Kubernetes supports only redirect mode.
 
-3. IPv6 is supported only on bare metal, vSphere, {ibm-power-name}, {ibm-z-name}, and Red Hat OpenStack clusters.
+3. IPv6 single-stack networking is only supported on bare metal, {ibm-power-name}, {ibm-z-name}, and {rh-openstack-first} clusters. You must enable IPv6 access for your image registry to prevent network connectivity issues when you need to pull images from the registry.
 
-4. IPv6 single stack is not supported on {ibm-power-name}, {ibm-z-name}, and Red Hat OpenStack clusters.
+4. IPv6 single-stack networking is not supported on {vmw-full}, {ibm-power-name}, {ibm-z-name}, and {rh-openstack} clusters.
 --