},
		{
			desc:            "want IPv4 and receive IPv4 and IPv6",
			ipString:        []string{"192.168.200.2", "192.1.34.23", "fd00:20::1", "2001:db9::3"},
			wantIPv6:        false,
			expectCorrect:   []string{"192.168.200.2", "192.1.34.23"},
			expectIncorrect: []string{"fd00:20::1", "2001:db9::3"},
		},
		{
			desc:            "want IPv4 and receive IPv4 only",

    }

    return true;
  }

  /**
   * Returns the IPv4 address embedded in an IPv4 compatible address.
   *
   * @param ip {@link Inet6Address} to be examined for an embedded IPv4 address
   * @return {@link Inet4Address} of the embedded IPv4 address
   * @throws IllegalArgumentException if the argument is not a valid IPv4 compatible address
   */

    }

    return true;
  }

  /**
   * Returns the IPv4 address embedded in an IPv4 compatible address.
   *
   * @param ip {@link Inet6Address} to be examined for an embedded IPv4 address
   * @return {@link Inet4Address} of the embedded IPv4 address
   * @throws IllegalArgumentException if the argument is not a valid IPv4 compatible address
   */

			n -= 8
			continue
		}
		m[i] = ^byte(0xff >> n)
		n = 0
	}
	return m
}

// Well-known IPv4 addresses
var (
	IPv4bcast     = IPv4(255, 255, 255, 255) // limited broadcast
	IPv4allsys    = IPv4(224, 0, 0, 1)       // all systems
	IPv4allrouter = IPv4(224, 0, 0, 2)       // all routers
	IPv4zero      = IPv4(0, 0, 0, 0)         // all zeros
)

// Well-known IPv6 addresses
var (

    val request = Request(server1.url("/"))

    server1.enqueue(refusedStream)
    server2.enqueue(bodyResponse)

    dns[server1.hostName] = listOf(ipv6, ipv4)
    socketFactory[ipv6] = server1.inetSocketAddress
    socketFactory[ipv4] = server2.inetSocketAddress

    client =
      client.newBuilder()
        .fastFallback(false)
        .apply {
          retryOnConnectionFailure = false
        }

// Is6 reports whether ip is an IPv6 address, including IPv4-mapped
// IPv6 addresses.
func (ip Addr) Is6() bool {
	return ip.z != z0 && ip.z != z4
}

// Unmap returns ip with any IPv4-mapped IPv6 address prefix removed.
//
// That is, if ip is an IPv6 address wrapping an IPv4 address, it
// returns the wrapped IPv4 address. Otherwise it returns ip unmodified.
func (ip Addr) Unmap() Addr {
	if ip.Is4In6() {
		ip.z = z4
	}

			expected:      "192.168.10.0/24",
			expectedError: false,
			name:          "valid: valid <IPv4,IPv6> ranges from dual-stack",
		},
		{
			svcSubnetList: "fd03::/112,192.168.10.0/24",
			expected:      "fd03::/112",
			expectedError: false,
			name:          "valid: valid <IPv6,IPv4> ranges from dual-stack",
		},
		{
			svcSubnetList: "192.168.10.0/24,fd03:x::/112",
			expected:      "",

    InetAddress ipv4 = InetAddresses.forString("1.2.3.4");
    assertEquals(ipv4, InetAddresses.getEmbeddedIPv4ClientAddress(testIp));

    // Test 6to4 address.
    testIp = (Inet6Address) InetAddresses.forString("2002:0102:0304::1");
    assertTrue(InetAddresses.hasEmbeddedIPv4ClientAddress(testIp));
    ipv4 = InetAddresses.forString("1.2.3.4");
    assertEquals(ipv4, InetAddresses.getEmbeddedIPv4ClientAddress(testIp));

		{"udp6", "golang.org"},
		{"udp", "golang.org"},
		{"udp", "golang.org"},
	}
	results := map[[2]string][]IPAddr{
		{"udp", "golang.org"}: {
			{IP: IPv4(127, 0, 0, 1)},
			{IP: IPv6loopback},
		},
		{"udp4", "golang.org"}: {
			{IP: IPv4(127, 0, 0, 1)},
		},
		{"udp6", "golang.org"}: {
			{IP: IPv6loopback},
		},
	}
	calls := int32(0)
	waitCh := make(chan struct{})

			serviceCidr: "10.96.0.0/16,fda9:d324:354d:1::/112",
			expStr:      []string{"FileContent--proc-sys-net-ipv4-ip_forward", "FileContent--proc-sys-net-ipv6-conf-default-forwarding"},
		},
		{
			testName:    "single stack ipv4",
			PodSubnet:   "10.244.0.0/16",
			serviceCidr: "10.96.0.0/16",
			expStr:      []string{"FileContent--proc-sys-net-ipv4-ip_forward"},
		},
		{
			testName:    "single stack ipv6",