static function Configlist_eat($cfp)
    {
        for (; $cfp; $cfp = $nextcfp) {
            $nextcfp = $cfp->next;
            if ($cfp->fplp !=0) {
                throw new Exception('fplp of configuration non-zero?');
            }
            if ($cfp->bplp !=0) {
                throw new Exception('bplp of configuration non-zero?');
            }
            if ($cfp->fws) {
                $cfp->fws = array();
            }
        }
    }