public void NormalConstructor_DualModeConfgiureable()
{
Socket socket = new Socket(AddressFamily.InterNetworkV6, SocketType.Stream, ProtocolType.Tcp);
Assert.False(socket.DualMode);
socket.DualMode = true;
Assert.True(socket.DualMode);
socket.DualMode = false;
Assert.False(socket.DualMode);
}