pre-translation improvements

      server machine, in order that this activity not adversely affect

      server performance.</p>

      <p>If you use any <code><directive module="mod_access">Allow</directive> 

      from domain</code> or <code><directive 

      module="mod_access">Deny</directive> from domain</code> 

      <p>If you use any <code><directive module="mod_authz_host"

      >Allow</directive> from domain</code> or <code><directive

      module="mod_authz_host">Deny</directive> from domain</code>

      directives (i.e., using a hostname, or a domain name, rather than

      an IP address) then you will pay for

      two DNS lookups (a reverse, followed by a forward lookup