t.Errorf("expected MaxDirectResponseBodySizeBytes %v, got %v",
			istio_route.DefaultMaxDirectResponseBodySizeBytes, l.MaxDirectResponseBodySizeBytes)
	}
	validateRouteConfigurationDomains(t, l)
}

func validateRouteConfigurationDomains(t testing.TB, l *route.RouteConfiguration) {
	t.Helper()

	vhosts := sets.New[string]()
	domains := sets.New[string]()
	for _, vhost := range l.VirtualHosts {