ใช้คำสั่ง request.servervariables("REMOTE_ADDR") แล้วได้ผลลัพ แบบนี้ fe80::d5b1:eee5:e42b:b5d6%13 แก้ยังไงครับ

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

using System.Net;

/// <summary>
/// Summary description for IPNetworking
/// </summary>
public class IPNetworking
{
    public static string GetIP4Address()
    {
        string IP4Address = String.Empty;

        foreach (IPAddress IPA in Dns.GetHostAddresses(HttpContext.Current.Request.UserHostAddress))
        {
            if (IPA.AddressFamily.ToString() == "InterNetwork")
            {
                IP4Address = IPA.ToString();
                break;
            }
        }

        if (IP4Address != String.Empty)
        {
            return IP4Address;
        }

        foreach (IPAddress IPA in Dns.GetHostAddresses(Dns.GetHostName()))
        {
            if (IPA.AddressFamily.ToString() == "InterNetwork")
            {
                IP4Address = IPA.ToString();
                break;
            }
        }

        return IP4Address;
    }
}