Как указать в IPAddress.Parse необходимый адрес

Dim IpToConnect As IPAddress = IPAddress.Parse(TextBox1.Text)

Imports System
Imports System.IO
Imports System.Net
Imports System.Net.Sockets
Imports System.Text
Imports Microsoft.VisualBasic
 
Public Class Form1
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
 
    End Sub
 
    Public Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim port As Int32 = 13000
        Dim IpToConnect As IPAddress = IPAddress.Parse(TextBox1.Text)
        Dim WinClient1 As New System.Net.Sockets.TcpClient
        Dim WinListener1 As System.Net.Sockets.TcpListener
        WinListener1.Start()
        WinListener1.AcceptTcpClient()
        WinClient1.Connect(IpToConnect, port)
        If (WinClient1.Connected) Then
            Label1.ForeColor = Color.Green
            Label1.Text = "Есть контакт!"
            Button1.Enabled = False
            Button2.Enabled = True
        End If
    End Sub
 
    Public Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Label1.ForeColor = Color.Red
        Label1.Text = "Нет подключения"
        Button2.Enabled = False
        Button1.Enabled = True
    End Sub
End Class

Dim WinListener1 As New System.Net.Sockets.TcpListener(System.Net.IPAddress.Any, 123123)
        WinListener1.Start()