resources = append(resources, ob...)
		// Add a blackhole and passthrough cluster for catching traffic to unresolved routes
		clusters = outboundPatcher.conditionallyAppend(clusters, nil, cb.buildBlackHoleCluster(), cb.buildDefaultPassthroughCluster())
		clusters = append(clusters, outboundPatcher.insertedClusters()...)
		// Setup inbound clusters

	}
	return c
}

// generates a cluster that sends traffic to dummy localport 0
// This cluster is used to catch all traffic to unresolved destinations in virtual service
func (cb *ClusterBuilder) buildBlackHoleCluster() *cluster.Cluster {
	c := &cluster.Cluster{
		Name:                 util.BlackHoleCluster,
		ClusterDiscoveryType: &cluster.Cluster_Type{Type: cluster.Cluster_STATIC},