public void TestCreateAccessRequestPacketIPv6()
        {
            var expected = IPAddress.IPv6Loopback;
            var secret   = "xyzzy5461";

            var packet = new RadiusPacket(PacketCode.AccessRequest, 0, secret);

            packet.Authenticator = Utils.StringToByteArray("0f403f9473978057bd83d5cb98f4227a");
            packet.AddAttribute("User-Name", "nemo");
            packet.AddAttribute("User-Password", "arctangent");
            packet.AddAttribute("NAS-IP-Address", IPAddress.Parse("192.168.1.16"));
            packet.AddAttribute("Framed-IPv6-Address", expected);
            packet.AddAttribute("NAS-Port", 3);

            var actual = packet.GetAttribute <IPAddress>("Framed-IPv6-Address");

            Assert.AreEqual(expected, actual);
        }