title: The IP address configured for the host-only network is not within the allowed ranges
body: <p>I got this error when I run <code>vagrant up</code> on my macOS:</p>
  <blockquote>
  <p>The IP address configured for the host-only network is not within the
  allowed ranges. Please update the address used to be within the
  allowed ranges and run the command again.</p>
  <p>Address: 192.168.10.10   Ranges: 192.168.56.0/21</p>
  </blockquote>
  <p>The same <code>Vagrantfile</code> works before, but not any more.</p>
  <p>Any idea?</p>