val address = factory.newAddress()
    var routeSelector = newRouteSelector(address)
    assertThat(routeSelector.hasNext()).isTrue()
    dns[uriHost] = dns.allocate(1)
    var selection = routeSelector.next()
    val route = selection.next()
    routeDatabase.failed(route)
    routeSelector = newRouteSelector(address)
    selection = routeSelector.next()

    var newRouteSelector = routeSelector
    if (newRouteSelector == null) {
      newRouteSelector =
        RouteSelector(
          address = address,
          routeDatabase = routeDatabase,
          connectionUser = connectionUser,
          fastFallback = fastFallback,
        )
      routeSelector = newRouteSelector
    }