使用Request.ServerVariables["Remote_Addr"] 总得到 ::1
网络连接中 IP6的协议已勾掉，求解，如何获得本机 IP
win7获取的是ipv6

string clientIP = string.Empty;

  clientIP = Request.ServerVariables["HTTP_X_FORWARDED_FOR"];

  if (string.IsNullOrEmpty(clientIP))
  clientIP = Request.ServerVariables["HTTP_X_REAL_IP"];

  if (string.IsNullOrEmpty(clientIP))
  clientIP = Request.ServerVariables["REMOTE_ADDR"];

  return clientIP;