tests := []struct {
		name                      string
		instances                 []*model.ServiceInstance
		services                  []*model.Service
		numListenersOnServicePort int
	}{
		{
			name: "gen a listener per IP instance",
			instances: []*model.ServiceInstance{
				// This instance is the proxy itself, will not gen a outbound listener for it.

)

func flattenInstances(il ...[]*model.ServiceInstance) []*model.ServiceInstance {
	ret := []*model.ServiceInstance{}
	for _, i := range il {
		ret = append(ret, i...)
	}
	return ret
}

func makeInstances(proxy *model.Proxy, svc *model.Service, servicePort int, targetPort int) []*model.ServiceInstance {
	ret := []*model.ServiceInstance{}
	for _, p := range svc.Ports {
		if p.Port != servicePort {