protected function _vcl_acl($name, array $hosts) {
        $tpl = <<<EOS
acl {{name}} {
    {{hosts}}
}
EOS;
        $fmtHost = create_function('$h', 'return sprintf(\'"%s";\',$h);');
        $vars = array(
            'name'  => $name,
            'hosts' => implode("\n    ", array_map($fmtHost, $hosts)),
        );
        return $this->_formatTemplate($tpl, $vars);
    }