> The additional cache ("acache") was found not to significantly
> improve performance and has been removed.  As a result, the
> acache-enable and acache-cleaning-interval options no longer
> have any effect.  For backwards compatibility, BIND will accept
> their presence in the configuration file, but will log a warning
> if it encounters them.
> 
> ... and similar text for the additional-from-xxx options.

Done, thanks.

I think this can be resolved now?