localhost in zonefile?

Hello,

Dave Morton wrote:
> Hi Arthur,
> 
> Don't know about HP_UX but it's generally recommeded to have this in so you
> don't get surpises, after all, it's your loopback (local) host and you are
> authorative for it, none else, including root servers. You'll also need a:
> 
> IN      PTR     localhost.
> 
> in there as well.

NO.
First, this PTR record belongs into the zone 0.0.127.in-addr.arpa
(or 127.in-addr.arpa, whichever you prefer) for the address 127.0.0.1 .
Second, it is strongly recommended (see BIND operations guide) not to
let it point to the fake top level domain 'localhost.' but to some
localhost.<my>.<dom>.<ain> . For the latter there should be an A-RR for
the IP-address 127.0.0.1 .

To answer the original question: Yes, you should have an entry
localhost       A       127.0.0.1
in your (forward) zone files. Note that the current origin will be appended
to 'localhost' in the example, so you really will produce an entry like
localhost.ucd.ie (if ucd.ie were this current origin) with this.

Regards,
  Peter