Merge pull request #100401 from rohennes/TELCODOCS-2039-RN

TELCODOCS-2039 release note

Author: slovern

release_notes/ocp-4-20-release-notes.adoc

@@ -759,6 +759,17 @@ You can use the `spec.interface` field of the BGP peer custom resource to config
 
 For more information, see xref:../networking/ingress_load_balancing/metallb/metallb-frr-k8s.adoc#nw-metallb-frrconfiguration-crd-interface[Configuring the integration of MetalLB and FRR-K8s ].
 
+[id="ocp-4-20-networking-pfrs-operator_{context}"]
+==== High-availability for pod-level bonding on SR-IOV networks (Technology Preview)
+
+This Technology Preview feature introduces the PF Status Relay Operator. The Operator uses Link Aggregation Control Protocol (LACP) as a health check to detect upstream switch failures, enabling high availability for workloads that use pod-level bonding with SR-IOV network virtual functions (VF).
+
+Without this feature, an upstream switch can fail while the underlying physical function (PF) still reports an `up` state. VFs attached to the PF also remain up, causing pods to send traffic to a dead endpoint and leading to packet loss.
+
+The PF Status Relay Operator prevents this by monitoring the LACP status of the PF. When a failure is detected, the Operator forces the link state of the attached VFs down, triggering the pod's bond to fail over to a backup path. This ensures the workload remains available and minimizes packet loss.
+
+For more information, see xref:../networking/hardware_networks/configure-lacp-for-sriov.adoc#sriov-lacp-sriov[High availability for pod-level bonds on SR-IOV networks].
+
 [id="ocp-release-notes-nodes_{context}"]
 === Nodes
 
@@ -1929,6 +1940,11 @@ In the following tables, features are marked with the following statuses:
 |Not Available
 |Not Available
 |Technology Preview
+
+|PF Status Relay Operator for high availability with SR-IOV networks
+|Not Available
+|Not Available
+|Technology Preview
 |====