title: React router configuration for unauthorised pages
body: <p>I have a router configuration with multiple routes and sub-routes. If the user is unauthorized, i need to redirect him to authorization page from all the pages except one. 
  My basic configuration is something like this</p>
  
  <pre><code>&lt;/Route&gt;
    &lt;Route path = "auth" handler = {Auth}/&gt;
    &lt;Route handler = {App}&gt;
      &lt;Route handler = {Container}&gt;
        &lt;Route path = "page1" handler = {Page1}/&gt;
        &lt;Route path = "page2" handler = {Page2}/&gt;
        &lt;Route path = "page3" handler = {Page3}/&gt;
      &lt;/Route&gt;
     &lt;/Route&gt;
  &lt;/Route&gt;
  </code></pre>
  
  <p>I need to redirect the user if to /auth if he is unauthorized, but i need to let the user access page2</p>