title: HttpContext IP Problem
body: <p>I have a problem when I use <code>HttpContext.Current.Request.UserHostAddress</code>, some times returns "192.168.0.17" (IPv4) and some times returns "fe80::99be:a05d:7938:1c30%8" (IPv6), calling from the same computer and navigator.</p>
  
  <p>What I do to return always IPv4?</p>