diff --git a/google/container/v1beta1/cluster_service.proto b/google/container/v1beta1/cluster_service.proto
index cd3efee31f..d35034ce07 100644
--- a/google/container/v1beta1/cluster_service.proto
+++ b/google/container/v1beta1/cluster_service.proto
@@ -922,7 +922,7 @@ message NodeNetworkConfig {
   // overprovisioning is disabled.
   PodCIDROverprovisionConfig pod_cidr_overprovision_config = 13;
 
-  // Output only. [Output only] The utilization of the IPv4 range for pod.
+  // Output only. [Output only] The utilization of the IPv4 range for the pod.
   // The ratio is Usage/[Total number of IPs in the secondary range],
   // Usage=numNodes*numZones*podIPsPerNode.
   double pod_ipv4_range_utilization = 16
@@ -1647,7 +1647,7 @@ message IPAllocationPolicy {
       [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // Output only. [Output only] The utilization of the cluster default IPv4
-  // range for pod. The ratio is Usage/[Total number of IPs in the secondary
+  // range for the pod. The ratio is Usage/[Total number of IPs in the secondary
   // range], Usage=numNodes*numZones*podIPsPerNode.
   double default_pod_ipv4_range_utilization = 25
       [(google.api.field_behavior) = OUTPUT_ONLY];
@@ -4895,7 +4895,7 @@ message DNSConfig {
     // Use CloudDNS for DNS resolution.
     CLOUD_DNS = 2;
 
-    // Use KubeDNS for DNS resolution
+    // Use KubeDNS for DNS resolution.
     KUBE_DNS = 3;
   }
 
@@ -5488,6 +5488,35 @@ message MonitoringConfig {
   // Enable Google Cloud Managed Service for Prometheus
   // in the cluster.
   ManagedPrometheusConfig managed_prometheus_config = 2;
+
+  // Configuration of Advanced Datapath Observability features.
+  AdvancedDatapathObservabilityConfig advanced_datapath_observability_config =
+      3;
+}
+
+// AdvancedDatapathObservabilityConfig specifies configuration of observability
+// features of advanced datapath.
+message AdvancedDatapathObservabilityConfig {
+  // Supported Relay modes
+  enum RelayMode {
+    // Default value. This shouldn't be used.
+    RELAY_MODE_UNSPECIFIED = 0;
+
+    // disabled
+    DISABLED = 1;
+
+    // exposed via internal load balancer
+    INTERNAL_VPC_LB = 3;
+
+    // exposed via external load balancer
+    EXTERNAL_LB = 4;
+  }
+
+  // Expose flow metrics on nodes
+  bool enable_metrics = 1;
+
+  // Method used to make Relay available
+  RelayMode relay_mode = 2;
 }
 
 // NodePoolLoggingConfig specifies logging configuration for nodepools.