diff --git a/networking/v1alpha3/destination_rule.pb.go b/networking/v1alpha3/destination_rule.pb.go
index f8cfbae2587..33bdf76d871 100644
--- a/networking/v1alpha3/destination_rule.pb.go
+++ b/networking/v1alpha3/destination_rule.pb.go
@@ -99,6 +99,14 @@
 // The following example shows how a destination rule can be applied to a
 // specific workload using the workloadSelector configuration.
 //
+// **Note:** The workloadSelector configuration in
+// destination rule controls which client workloads
+// use this destination rule, rather than controlling
+// which servers are selected as traffic endpoints.
+// Different from workloadSelectors,
+// [Subsets](https://istio.io/latest/docs/reference/config/networking/destination-rule/#Subset)
+// define fine-grained groups of endpoints for a service.
+//
 // ```yaml
 // apiVersion: networking.istio.io/v1beta1
 // kind: DestinationRule
diff --git a/networking/v1alpha3/destination_rule.pb.html b/networking/v1alpha3/destination_rule.pb.html
index 1105a0000c5..5c87f89cb81 100644
--- a/networking/v1alpha3/destination_rule.pb.html
+++ b/networking/v1alpha3/destination_rule.pb.html
@@ -72,6 +72,13 @@
 <p>Destination Rules can be customized to specific workloads as well.
 The following example shows how a destination rule can be applied to a
 specific workload using the workloadSelector configuration.</p>
+<p><strong>Note:</strong> The workloadSelector configuration in
+destination rule controls which client workloads
+use this destination rule, rather than controlling
+which servers are selected as traffic endpoints.
+Different from workloadSelectors,
+<a href="https://istio.io/latest/docs/reference/config/networking/destination-rule/#Subset">Subsets</a>
+define fine-grained groups of endpoints for a service.</p>
 <pre><code class="language-yaml">apiVersion: networking.istio.io/v1beta1
 kind: DestinationRule
 metadata:
diff --git a/networking/v1alpha3/destination_rule.proto b/networking/v1alpha3/destination_rule.proto
index 447d2601e71..98489682c90 100644
--- a/networking/v1alpha3/destination_rule.proto
+++ b/networking/v1alpha3/destination_rule.proto
@@ -100,6 +100,14 @@ import "type/v1beta1/selector.proto";
 // The following example shows how a destination rule can be applied to a
 // specific workload using the workloadSelector configuration.
 //
+// **Note:** The workloadSelector configuration in 
+// destination rule controls which client workloads 
+// use this destination rule, rather than controlling 
+// which servers are selected as traffic endpoints.
+// Different from workloadSelectors, 
+// [Subsets](https://istio.io/latest/docs/reference/config/networking/destination-rule/#Subset) 
+// define fine-grained groups of endpoints for a service.
+// 
 // ```yaml
 // apiVersion: networking.istio.io/v1beta1
 // kind: DestinationRule