if proxy.MergedGateway == nil {
		return nil
	}

	// host set.
	hostsFromGateways := ps.extraServicesForProxy(proxy)
	for _, gw := range proxy.MergedGateway.GatewayNameForServer {
		hostsFromGateways.Merge(ps.virtualServiceIndex.destinationsByGateway[gw])
	}
	log.Debugf("GatewayServices: gateway %v is exposing these hosts:%v", proxy.ID, hostsFromGateways)

	gwSvcs := make([]*Service, 0, len(svcs))

	for _, s := range svcs {