buildServiceWithPort("test2.com", 81, protocol.Unsupported, tnow),
		buildServiceWithPort("test3.com", 82, protocol.TCP, tnow),
	}
	instances := make([]*model.ServiceInstance, 0, len(services))
	for _, s := range services {
		instances = append(instances, &model.ServiceInstance{
			Service: s,
			Endpoint: &model.IstioEndpoint{
				EndpointPort: uint32(s.Ports[0].Port),
				Address:      "1.1.1.1",
			},

		}
	}
	ret := ports.UnsortedList()
	if len(ret) == 0 && legacyGatewaySelector {
		// When we are using legacy gateway label selection, we should bind to the port as-is if there is
		// no matching ServiceInstance.
		return []uint32{number}
	}
	// For cases where we are directly referencing a Service, we know that they port *must* be in the Service,
	// so we have no fallback. If there was no match, the Gateway is a no-op.