newRouteSelector(
        address = address,
        fastFallback = false,
      )
    assertThat(routeSelector.hasNext()).isTrue()
    val (ipv4_1, ipv4_2) = dns.allocate(2)
    val (ipv6_1, ipv6_2) = dns.allocateIpv6(2)
    dns[uriHost] = listOf(ipv4_1, ipv4_2, ipv6_1, ipv6_2)

    val selection = routeSelector.next()
    assertThat(selection.routes.map { it.socketAddress.address }).containsExactly(
      ipv4_1,