//  - 0 gateways for network4
	ds := environment(t)
	origServices := ds.Env().Services()
	origGateways := ds.Env().NetworkGateways()
	ds.MemRegistry.AddService(&model.Service{
		Hostname: "istio-ingressgateway.istio-system.svc.cluster.local",
		Attributes: model.ServiceAttributes{
			ClusterExternalAddresses: &model.AddressMap{
				Addresses: map[cluster.ID][]string{
					"cluster2a": {""},
					"cluster2b": {""},

	if err != nil {
		// Envoy logs errors again, so no need to log beyond debug level
		log.Debugf("failed to create upstream grpc client: %v", err)
		// Increase metric when xds connection error, for example: forgot to restart ingressgateway or sidecar after changing root CA.
		metrics.IstiodConnectionErrors.Increment()
		return err
	}
	log.Infof("connected to upstream XDS server: %s", p.istiodAddress)

		Metadata:        &proxyGatewayMetadata,
		ConfigNamespace: "not-default",
	}
	proxyGatewayMetadata = model.NodeMetadata{
		Namespace: "not-default",
		Labels: map[string]string{
			"istio": "ingressgateway",
		},
	}
	virtualServiceSpec = &networking.VirtualService{
		Hosts:    []string{"test.com"},
		Gateways: []string{"mesh"},
		Tcp: []*networking.TCPRoute{
			{