移动联通网络ip奇怪问题

测试代码：

<form id="form1" runat="server">
        您的IP地址是：[<asp:Label ID="lblIP" runat="server"></asp:Label>]
        <br />
        IP地址：<asp:TextBox ID="txtIP" runat="server" Width="300"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ErrorMessage="IP错误"
            Display="Dynamic" ControlToValidate="txtIP" ValidationExpression="^\s*((([0-9]?[0-9])|(1[0-9]{2})|(2[0-4][0-9])|(25[0-5]))\.){3}(([0-9]?[0-9])|(1[0-9]{2})|(2[0-4][0-9])|(25[0-5]))\s*$"></asp:RegularExpressionValidator>
        <asp:Button ID="btnQuery" runat="server" Text="查询IP" OnClick="btnQuery_Click" />
        <br />
        查询IP地区：
        <asp:Label ID="lblRegion" runat="server" ForeColor="red"></asp:Label>
        
        <asp:PlaceHolder ID="PlaceHolder1" runat="server" Visible="false">
            <h2>ip信息1</h2>
            <div>
                <asp:Literal ID="Literal1" runat="server"></asp:Literal>
            </div>
            <h2>ip信息2</h2>
            <div>
                <asp:Literal ID="Literal2" runat="server"></asp:Literal>
            </div>
            <h2>ip信息3</h2>
            <div>
                <asp:Literal ID="Literal3" runat="server"></asp:Literal>
            </div>
            <h2>ip信息4</h2>
            <div>
                <asp:Literal ID="Literal4" runat="server"></asp:Literal>
            </div>
        </asp:PlaceHolder>
    </form>

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            this.lblIP.Text = Request.UserHostAddress;
            this.txtIP.Text = Get("ip");
            if (this.txtIP.Text.Trim() != "")
            {
                this.Validate();
                btnQuery_Click(sender, e);
            }

            string t = Get("t");
            if (!string.IsNullOrEmpty(t))
            {
                this.PlaceHolder1.Visible = true;
                string ip = Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
                if (!string.IsNullOrEmpty(ip))
                {
                    new LogForError().AddLogForError("HTTP_X_FORWARDED_FOR", 1, ip);
                    this.Literal1.Text += "HTTP_X_FORWARDED_FOR:" + ip + "<br/>";
                    this.Literal2.Text += "HTTP_X_FORWARDED_FOR:" + GetIp1(ip) + "<br/>";
                    this.Literal3.Text += "HTTP_X_FORWARDED_FOR:" + GetIp2(ip) + "<br/>";
                    this.Literal4.Text += "HTTP_X_FORWARDED_FOR:" + GetIp3(ip) + "<br/>";
                }

                ip = Request.ServerVariables["REMOTE_ADDR"];
                if (!string.IsNullOrEmpty(ip))
                {
                    new LogForError().AddLogForError("REMOTE_ADDR", 1, ip);
                    this.Literal1.Text += "REMOTE_ADDR:" + ip + "<br/>";
                    this.Literal2.Text += "REMOTE_ADDR:" + GetIp1(ip) + "<br/>";
                    this.Literal3.Text += "REMOTE_ADDR:" + GetIp2(ip) + "<br/>";
                    this.Literal4.Text += "REMOTE_ADDR:" + GetIp3(ip) + "<br/>";
                }

                ip = new IP().GetIPAddress();
                if (!string.IsNullOrEmpty(ip))
                {
                    new LogForError().AddLogForError("CommonClass", 1, ip);
                    this.Literal1.Text += "CommonClass:" + ip + "<br/>";
                    this.Literal2.Text += "CommonClass:" + GetIp1(ip) + "<br/>";
                    this.Literal3.Text += "CommonClass:" + GetIp2(ip) + "<br/>";
                    this.Literal4.Text += "CommonClass:" + GetIp3(ip) + "<br/>";
                }
            }
        }
    }

    private string GetIp1(string ip)
    {
        return "<span>" + ip.Replace(".", ".</span><span>") + "</span>";
    }

    private string GetIp2(string ip)
    {
        return "<span>-" + ip.Replace(".", "</span><span>-") + "</span>";
    }

    private string GetIp3(string ip)
    {
        return ip.Replace(".", " . ");
    }

    protected void btnQuery_Click(object sender, EventArgs e)
    {
        if (!this.IsValid)
        {
            ShowMessageBox("验证失败！");
            return;
        }
        if (this.txtIP.Text.Trim() != "")
        {
            this.lblRegion.Text = new IP().GetAreaString(this.txtIP.Text.Trim());
        }
    }

 

有部分客户打开页面时这样的，几处ip信息不一样：

 

数据日志记录的信息：

 

总结：返回到客户端页面不进行处理的ip，会被替换掉其他ip。“27.24.190.111”被替换成了“202.114.0.111”

难道是代理服务器干的？还是移动联通干的？

各位有遇到过？

 

补充：经测试，不只是ip会被替换，返回到ie的地区信息也会被替换（我用到ip库查询地区）。比如“浙江省温州市“被替换成”四川省成都市“。

protected string GetRegion(string name)
        {
            char[] name1 = name.ToCharArray();
            string name2 = "";
            foreach (char item in name1)
            {
                name2 += "<span>" + item.ToString() + "</span>";
            }

            return name2;
        }

地区信息，用GetRegion函数处理返回后，正常。

ip和地区信息在服务端返回到ie浏览客户端会被替换；ie浏览器客户端提交到服务到不受影响正常。