diff --git a/staging/src/k8s.io/legacy-cloud-providers/vsphere/vclib/connection.go b/staging/src/k8s.io/legacy-cloud-providers/vsphere/vclib/connection.go
index 9e399e4bb48..44d8f4a9dcd 100644
--- a/staging/src/k8s.io/legacy-cloud-providers/vsphere/vclib/connection.go
+++ b/staging/src/k8s.io/legacy-cloud-providers/vsphere/vclib/connection.go
@@ -223,6 +223,10 @@ func (connection *VSphereConnection) NewClient(ctx context.Context) (*vim25.Clie
 		klog.Errorf("failed to check if vCenter version:%v and api version: %s is deprecated. Error: %v", client.ServiceContent.About.Version, client.ServiceContent.About.ApiVersion, err)
 	}
 	if vcdeprecated {
+		// After this deprecation, vSphere 6.5 support period is extended to October 15, 2022 as
+		// https://blogs.vmware.com/vsphere/2021/03/announcing-limited-extension-of-vmware-vsphere-6-5-general-support-period.html
+		// In addition, the external vSphere cloud provider does not support vSphere 6.5.
+		// Please keep vSphere 6.5 support til the period.
 		klog.Warningf("vCenter is deprecated. version: %s, api verson: %s Please consider upgrading vCenter and ESXi servers to 6.7u3 or higher", client.ServiceContent.About.Version, client.ServiceContent.About.ApiVersion)
 	}
 	return client, nil