listOf(ipv6_ab, ipv4_10_0_0_6, ipv6_fc, ipv4_10_0_0_1, ipv4_10_0_0_4),
    )
  }

  @Test fun ipv6Only() {
    val result = reorderForHappyEyeballs(listOf(ipv6_ab, ipv6_fc))

    assertThat(result).isEqualTo(
      listOf(ipv6_ab, ipv6_fc),
    )
  }

  @Test fun ipv4Only() {
    val result =
      reorderForHappyEyeballs(
        listOf(
          ipv4_10_0_0_6,
          ipv4_10_0_0_1,

func socket(ctx context.Context, net string, family, sotype, proto int, ipv6only bool, laddr, raddr sockaddr, ctrlCtxFn func(context.Context, string, string, syscall.RawConn) error) (fd *netFD, err error) {
	s, err := sysSocket(family, sotype, proto)
	if err != nil {
		return nil, err
	}
	if err = setDefaultSockopts(s, family, sotype, ipv6only); err != nil {
		poll.CloseFunc(s)
		return nil, err
	}

var triggerTimeString = triggerTime.Format(time.RFC3339Nano)
var oldTriggerTimeString = triggerTime.Add(-time.Hour).Format(time.RFC3339Nano)

var ipv4only = []v1.IPFamily{v1.IPv4Protocol}
var ipv6only = []v1.IPFamily{v1.IPv6Protocol}
var ipv4ipv6 = []v1.IPFamily{v1.IPv4Protocol, v1.IPv6Protocol}
var ipv6ipv4 = []v1.IPFamily{v1.IPv6Protocol, v1.IPv4Protocol}

		address: sa.String(),
	}
}

// socket returns a network file descriptor that is ready for
// I/O using the fake network.
func socket(ctx context.Context, net string, family, sotype, proto int, ipv6only bool, laddr, raddr sockaddr, ctrlCtxFn func(context.Context, string, string, syscall.RawConn) error) (*netFD, error) {
	if raddr != nil && ctrlCtxFn != nil {
		return nil, os.NewSyscallError("socket", syscall.ENOTSUP)
	}

	// darwin, kernel version 11.3.0
	//	net.inet6.ip6.v6only=0 (overridable by sysctl or IPV6_V6ONLY option)
	// freebsd, kernel version 8.2
	//	net.inet6.ip6.v6only=1 (overridable by sysctl or IPV6_V6ONLY option)
	// linux, kernel version 3.0.0
	//	net.ipv6.bindv6only=0 (overridable by sysctl or IPV6_V6ONLY option)
	// openbsd, kernel version 5.0
	//	net.inet6.ip6.v6only=1 (overriding is prohibited)

				ObjectMeta: metav1.ObjectMeta{
					Name: "test-name",
				},
				Spec: networking.ServiceCIDRSpec{
					CIDRs: []string{"asdasdasd"},
				},
			},
		},
		"iponly-iprange-ipv4": {
			expectedErrors: 1,
			ipRange: &networking.ServiceCIDR{
				ObjectMeta: metav1.ObjectMeta{
					Name: "test-name",
				},
				Spec: networking.ServiceCIDRSpec{