Buffer().writeInt(it.toInt()).readByteArray(),
        )
      }
  }

  /** Allocates and returns `count` fake IPv6 addresses like [::ff00:64, ::ff00:65].  */
  fun allocateIpv6(count: Int): List<InetAddress> {
    val from = nextAddress
    nextAddress += count
    return (from until nextAddress)
      .map {
        return@map InetAddress.getByAddress(

      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,