MVCコントローラにてローカルIPを取得

 /// <summary>

        ///   IP

        /// </summary>

        /// <returns></returns>

        private string GetIP()

        {

            string ip = string.Empty;

            if (!string.IsNullOrEmpty(System.Web.HttpContext.Current.Request.ServerVariables["HTTP_VIA"]))

                ip = Convert.ToString(System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]);

            if (string.IsNullOrEmpty(ip))

                ip = Convert.ToString(System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]);

            return ip;

        }