title: Failed binding to auth address 127.0.0.1 port 18120 bound to server inner-tunnel: Address already in use
body: <p>I have configure freeradius following <a href="https://bytenews.org/tutorials/freeradius-3-sql-ubuntu-17/" rel="nofollow noreferrer">this tutorial</a>.</p>
  <p>But when I run a command</p>
  <pre><code>&quot;freeradius -X&quot; 
  </code></pre>
  <p>I got the following error radiusd:</p>
  <blockquote>
  Opening IP addresses and Ports #### listen { type = &quot;auth&quot; ipaddr =
  <p>127.0.0.1 port = 18120 Failed binding to auth address 127.0.0.1 port 18120  bound to server inner-tunnel: Address already in use
  /etc/freeradius/3.0/sites-  enabled/inner-tunnel[33]: Error binding to
  port for 127.0.0.1 port 18120</p>
  <hr />
  </blockquote>