diff --git a/build/yamls/antrea-windows.yml b/build/yamls/antrea-windows.yml
index 09e87dad5a7..3f46e5c1fde 100644
--- a/build/yamls/antrea-windows.yml
+++ b/build/yamls/antrea-windows.yml
@@ -23,6 +23,11 @@ data:
     # Service traffic.
     #  AntreaProxy: true
 
+    # Enable EndpointSlice support in AntreaProxy. Don't enable this feature unless that EndpointSlice
+    # API version v1beta1 is supported and set as enabled in Kubernetes. If AntreaProxy is not enabled,
+    # this flag will not take effect.
+    #  EndpointSlice: false
+
     # Enable flowexporter which exports polled conntrack connections as IPFIX flow records from each agent to a configured collector.
     #  FlowExporter: false
 
diff --git a/third_party/proxy/config/config.go b/third_party/proxy/config/config.go
index 69733c5b03e..6dfd5d62adc 100644
--- a/third_party/proxy/config/config.go
+++ b/third_party/proxy/config/config.go
@@ -347,7 +347,8 @@ func (c *EndpointSliceConfig) handleUpdateEndpointSlice(oldObj, newObj interface
 		return
 	}
 	for _, h := range c.eventHandlers {
-		klog.V(4).Infof("Calling handler.OnEndpointSliceUpdate")
+		klog.V(4).Infof("Calling handler.OnEndpointSliceUpdate from %+v", oldEndpointSlice)
+		klog.V(4).Infof("Calling handler.OnEndpointSliceUpdate to %+v", newEndpointSlice)
 		h.OnEndpointSliceUpdate(oldEndpointSlice, newEndpointSlice)
 	}
 }
@@ -366,7 +367,7 @@ func (c *EndpointSliceConfig) handleDeleteEndpointSlice(obj interface{}) {
 		}
 	}
 	for _, h := range c.eventHandlers {
-		klog.V(4).Infof("Calling handler.OnEndpointsDelete")
+		klog.V(4).Infof("Calling handler.OnEndpointsDelete %+v", endpointSlice)
 		h.OnEndpointSliceDelete(endpointSlice)
 	}
 }