Read IP address of all website currently visted

Hi,
I am trying to make an application which tries to read the website ip's currentely visited. I have found an example of packet sniffer in c# (http://www.codeproject.com/KB/IP/CSNetworkSniffer.aspx).
My problem is that i dont want to run the call conitnuously. So i kept the call in a timer. All works fine, but when i plugged in my wifi internet connection( in addtion to my current lan connection), i was not able to view webpage. So i modified the code such a way to montior the ip through all the port. Then i am getting

Code:

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System.Net.Sockets.SocketException: An invalid argument was supplied  at System.Net.Sockets.Socket.IOControl(Int32 ioControlCode, Byte[] optionInValue, Byte[] optionOutValue)  at System.Net.Sockets.Socket.IOControl(IOControlCode ioControlCode, Byte[] optionInValue, Byte[] optionOutValue)

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Here is my code

Code:

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private void checkIP(string strIP)
        {

            //mainSocket.Close();
            //  mainSocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
            mainSocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
            mainSocket.Bind(new IPEndPoint(IPAddress.Any,0));// Parse(strIP), 0));
            mainSocket.SetSocketOption(SocketOptionLevel.IP,          //Applies only to IP packets
                          SocketOptionName.HeaderIncluded, //Set the include the header
                          true);                          //option to true
            byte[] byTrue = new byte[4] { 1, 0, 0, 0 };
            byte[] byOut = new byte[4] { 1, 0, 0, 0 }; //Capture outgoing packets
            mainSocket.IOControl(IOControlCode.ReceiveAll,              //Equivalent to SIO_RCVALL constant
                //of Winsock 2
                  byTrue,
                  byOut);
               
            mainSocket.BeginReceive(byteData, 0, byteData.Length, SocketFlags.None, new AsyncCallback(OnReceive), null);
            timer1Sec.Enabled = true;
        }

        /*************************************************************/
        private void OnReceive(IAsyncResult ar)
        {
            try
            {

                int nReceived = mainSocket.EndReceive(ar);

                //Analyze the bytes received...

                ParseData(byteData, nReceived);



            }

            catch (Exception ex)
            {
                //  MessageBox.Show(ex.Message, "MJsniffer", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

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checkIP is called from a timer. I am getting exception in mainSocket.IOControl