diff --git a/pkg/autoscaler/metrics/stats_scraper.go b/pkg/autoscaler/metrics/stats_scraper.go
index e3ba25ab68e9..31a519c79297 100644
--- a/pkg/autoscaler/metrics/stats_scraper.go
+++ b/pkg/autoscaler/metrics/stats_scraper.go
@@ -33,6 +33,7 @@ import (
 	"golang.org/x/sync/errgroup"
 
 	netcfg "knative.dev/networking/pkg/config"
+	"knative.dev/networking/pkg/http/header"
 	pkgmetrics "knative.dev/pkg/metrics"
 	autoscalingv1alpha1 "knative.dev/serving/pkg/apis/autoscaling/v1alpha1"
 	"knative.dev/serving/pkg/apis/serving"
@@ -298,10 +299,10 @@ func (s *serviceScraper) scrapePods(window time.Duration) (Stat, error) {
 					return err
 				}
 
-				if s.usePassthroughLb {
-					req.Host = s.host
-					req.Header.Add("Knative-Direct-Lb", "true")
-				}
+				// if s.usePassthroughLb {
+				req.Host = s.host
+				req.Header.Add(header.PassthroughLoadbalancingKey, "true")
+				// }
 
 				stat, err := s.directClient.Do(req)
 				if err == nil {
diff --git a/pkg/reconciler/serverlessservice/resources/services.go b/pkg/reconciler/serverlessservice/resources/services.go
index 5672fc12e3df..94f406cce905 100644
--- a/pkg/reconciler/serverlessservice/resources/services.go
+++ b/pkg/reconciler/serverlessservice/resources/services.go
@@ -188,7 +188,8 @@ func MakePrivateService(sks *v1alpha1.ServerlessService, selector map[string]str
 				Port:       targetPort(sks).IntVal,
 				TargetPort: targetPort(sks),
 			}},
-			Selector: selector,
+			Selector:  selector,
+			ClusterIP: corev1.ClusterIPNone,
 		},
 	}
 }
diff --git a/pkg/reconciler/serverlessservice/resources/services_test.go b/pkg/reconciler/serverlessservice/resources/services_test.go
index 0690f52d3d07..04fb30a9b964 100644
--- a/pkg/reconciler/serverlessservice/resources/services_test.go
+++ b/pkg/reconciler/serverlessservice/resources/services_test.go
@@ -133,6 +133,7 @@ func privateSvcMod(s *corev1.Service) {
 			"app": "sadness",
 		}
 	}
+	s.Spec.ClusterIP = corev1.ClusterIPNone
 	s.Spec.Ports = append(s.Spec.Ports,
 		[]corev1.ServicePort{{
 			Name:       servingv1.AutoscalingQueueMetricsPortName,
@@ -470,6 +471,7 @@ func TestMakePrivateService(t *testing.T) {
 			s.Labels["ava"] = "adore"
 			s.Labels[networking.SKSLabelKey] = "dream-tonight-cherub-rock-mayonnaise-hummer-disarm-rocket-soma-quiet"
 			s.Annotations = map[string]string{"cherub": "rock"}
+			s.Spec.ClusterIP = corev1.ClusterIPNone
 		}, privateSvcMod, func(s *corev1.Service) {
 			// And now patch port to be http2.
 			s.Spec.Ports[0] = corev1.ServicePort{