Localhost variable hostip already declared in current block

Imports System.Net.Sockets
Imports System.Net

Public Class Form1

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim instance As Socket
Dim backlog As Integer

Dim hostip As String
Dim port As Integer




port = "80"

' create the socket
Dim listenSocket As New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)

' bind the listening socket to the port
Dim hostIP As IPAddress = Dns.Resolve(IPAddress.Any.ToString()).AddressList(0)
Dim ep As New IPEndPoint(hostIP, port)
listenSocket.Bind(ep)

' start listening
listenSocket.Listen(backlog)
'CreateAndListen
End Sub
End Class

not sure now...