System.net.Sockets.Socket bind problem

[Ph0b0s]

Well, this is the code. lSocket is a Socket. On the first time i bind the endpoint and te port. And it works perfectly!

lSocket.Bind(New IPEndPoint(Dns.GetHostByName(LocalHostName).AddressList(0).Any, LocalPort))
      lSocket.Listen(5)
      result = lSocket.BeginAccept(AddressOf ConnectionRequest, lSocket)
      lSocket = result.AsyncState

then, i close the socket and do something like:

lSocket.Close()
    lSocket = Nothing
    lSocket = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)

And when i bind the socket again, it returns the error:
"Normaly, it's only possible to use once each socket adress".

Dunno why, the bind still there! if i change the port, it works with no problem, but i want the same door. But i can close the socket, destroy it, create it again and bind it.

Any suggestion?