_, _, hostname, port := model.ParseSubsetKey(routeName)
	if hostname == "" || port == 0 {
		log.Warnf("failed to parse %v", routeName)
		return nil
	}

	virtualHosts, _, _ := core.BuildSidecarOutboundVirtualHosts(node, push, routeName, port, nil, &model.DisabledCache{})

	// Only generate the required route for grpc. Will need to generate more
	// as GRPC adds more features.
	return &route.RouteConfiguration{

			virtualHosts = getVirtualHostsForSniffedServicePort(vhosts, routeName)
			cacheHit = true
		}
	}
	if !cacheHit {
		virtualHosts, resource, routeCache = BuildSidecarOutboundVirtualHosts(node, req.Push, routeName, listenerPort, efKeys, configgen.Cache)
		if resource != nil {
			return resource, true
		}
		if listenerPort > 0 {
			// only cache for tcp ports and not for uds