title: Why is my inter-service traffic showing in the Passthrough Cluster in Kiali
body: <p>I have two Istio clusters using a replicated control plane with Kiali running. In each cluster I have two applications which interact, but I don't see the traffic between them in the Kiali dashboard. Instead, the traffic shows as going through the Passthrough Cluster. </p>
  
  <p>The application's interact using the kubernetes service name, and they are interacting correctly, it's just not showing correctly in Kiali.</p>
  
  <p>Any thoughts as to what might be the problem? Or is this an expected behaviour (I'm still new to Istio).</p>