Merge pull request #54884 from ahardin-rh/OCPBUGS-6007

OCPBUGS-6007: OVN-Kubernetes doc clarification

Author: ahardin-rh

modules/nw-ovn-kuberentes-limitations.adoc

@@ -3,12 +3,10 @@
 // * networking/ovn_kubernetes_network_provider/about-ovn-kubernetes.adoc
 
 [id="nw-ovn-kubernetes-limitations_{context}"]
-= OVN-Kubernetes limitations
+= OVN-Kubernetes IPv6 and dual-stack limitations
 
 The OVN-Kubernetes network plugin has the following limitations:
 
-* The `sessionAffinityConfig.clientIP.timeoutSeconds` service has no effect in an OpenShift OVN environment, but does in an OpenShift SDN environment. This incompatibility can make it difficult for users to migrate from OpenShift SDN to OVN.
-
 // The foll limitation is also recorded in the installation section.
 * For clusters configured for dual-stack networking, both IPv4 and IPv6 traffic must use the same network interface as the default gateway.
 If this requirement is not met, pods on the host in the `ovnkube-node` daemon set enter the `CrashLoopBackOff` state.

modules/nw-ovn-kubernetes-features.adoc

@@ -2,14 +2,20 @@
 //
 // * networking/ovn_kubernetes_network_provider/about-ovn-kubernetes.adoc
 
-[id="nw-ovn-kubernetes-features_{context}"]
-= OVN-Kubernetes features
+[id="nw-ovn-kubernetes-purpose_{context}"]
+= OVN-Kubernetes purpose
 
-The OVN-Kubernetes network plugin implements the following features:
+The OVN-Kubnernetes network plugin is an open-source, fully-featured Kubernetes CNI plugin that uses Open Virtual Network (OVN) to manage network traffic flows. OVN is a community developed, vendor-agnostic network virtualization solution. The OVN-Kubnernetes network plugin:
 
 // OVN (Open Virtual Network) is consistent with upstream usage.
 
 * Uses OVN (Open Virtual Network) to manage network traffic flows. OVN is a community developed, vendor-agnostic network virtualization solution.
 * Implements Kubernetes network policy support, including ingress and egress rules.
 * Uses the Geneve (Generic Network Virtualization Encapsulation) protocol rather than VXLAN to create an overlay network between nodes.
 
+The OVN-Kubernetes network plugin provides the following advantages over OpenShift SDN.
+
+* Full support for IPv6 single-stack and IPv4/IPv6 dual-stack networking on supported platforms
+* Support for hybrid clusters with both Linux and Microsoft Windows workloads
+* Optional IPsec encryption of intra-cluster communications
+* Offload of network data processing from host CPU to compatible network cards and data processing units (DPUs)