     You can also write <code class="literal">all</code> to match any IP address,
       <code class="literal">samehost</code> to match any of the server's own IP
       addresses, or <code class="literal">samenet</code> to match any address in any
       subnet that the server is directly connected to.
      </p><p>
       If a host name is specified (anything that is not an IP address
       range or a special key word is treated as a host name),
       that name is compared with the result of a reverse n