How to establish UDP connection with emulator under WIN CE?

Question

C++ / C#

There is a WIN CE emulator running on a virtual machine (the network is configured via NAT).
If the client is located on the emulator

try
{
      var client = new UdpClient();
      IPEndPoint ep = new IPEndPoint(IPAddress.Parse("10.0.1.252"), 11000); 
      client.Connect(ep);
      client.Send(new byte[] { 1, 2, 3, 4, 5 }, 5);
      var receivedData = client.Receive(ref ep);
      string msg = String.Format("receive data from " + ep.ToString());
      MessageBox.Show(msg);
}
catch (Exception ex)
{
      MessageBox.Show(ex.Message);
}

and servers on desktop

UdpClient udpServer = new UdpClient(11000);

while (true)
{
     var remoteEP = new IPEndPoint(IPAddress.Any, 11000);
     var data = udpServer.Receive(ref remoteEP); 

     string msg = String.Format("receive data from " + remoteEP.ToString());
     MessageBox.Show(msg);

     udpServer.Send(new byte[] { 1 }, 1, remoteEP); 
}

everything is working. If the server is placed on the emulator, then it will hang on the Receive timeout
. I suspect that something is wrong with the network settings (but what, does it work in the opposite direction?), while tcp works without problems in both directions
PS I understand that the question was asked incorrectly, because in udp, in fact, a connection is not established, but it was not possible to formulate it differently