if gateway is in same
                                       namespace as virtual service.
  tcp:
  - match:
    - port: 27017
    route:
    - destination:
        host: mongo.prod.svc.cluster.local
        port:
          number: 5555
</code></pre><p>It is possible to restrict the set of virtual services that can bind to
a gateway server using the namespace/hostname syntax in the hosts field.
For example, the following Gateway allows any virtual service in the ns1
namespace to bind to it, while restrictin