     <code class="filename">pg_hba.conf</code> during every connection attempt.
        That could be quite slow if many names are listed.
        And if there is a resolver problem with one of the host names,
        it becomes everyone's problem.
       </p><p>
        Also, a reverse lookup is necessary to implement the suffix
        matching feature, because the actual client host name needs to
        be known in order to match it against the pattern.
       </p><p>
        Note that this behavior is 