<tr><td><code>%h</code></td>
<td>Remote hostname. Will log the IP address if <directive
module="core">HostnameLookups</directive> is set to
- <code>Off</code>, which is the default.</td></tr>
+ <code>Off</code>, which is the default. If it logs the hostname
+ for only a few hosts, you probably have access control
+ directives mentioning them by name. See <a
+ href="mod_authz_host.html#reqhost">the Require host
+ documentation</a>.</td></tr>
<tr><td><code>%H</code></td>
<td>The request protocol.</td></tr>