public void Socket_ConnectAsyncV4IPEndPointToV4Host_Throws()
{
Socket socket = new Socket(AddressFamily.InterNetworkV6, SocketType.Stream, ProtocolType.Tcp);
SocketAsyncEventArgs args = new SocketAsyncEventArgs();
args.RemoteEndPoint = new IPEndPoint(IPAddress.Loopback, UnusedPort);
Assert.Throws<NotSupportedException>(() =>
{
socket.ConnectAsync(args);
});
}