title: How is Application insight tracking the User_Id?
body: <p>Im running a Azure Webapp with application insight.</p>
  <p>I know Microsoft cant show the real IP (Client_IP) so I add the real IP address to all requests (Ip).</p>
  <p>I have a visitor client_id=&quot;h9zbt&quot; that in the last 24h is using 48 different client_IP adresses.</p>
  <p>The same user also has several real IPv6 adresses.</p>
  <p>I like to block this IP from my website, but I think this looks so strange.</p>
  <p>Is it really the same user?</p>
  <p>How is Application insight tracking the User_Id?</p>
  <p><a href="https://i.stack.imgur.com/JGJtY.png" rel="nofollow noreferrer">Image link</a></p>