On Sat, 6 Jan 2001, Peter Brezny wrote:
> Why are PTR records placed in zone db files separate from all other resource
> records?
Because they're not in the same zone.
> For small domains, wouldn't it be simpler to just have your reverse ip to
> name mappings in the same zone db file as your forward name to ip mappings?
No. There's not necessarily a one-to-one mapping. Consider the case
of a web server that servers hundreds of domain names for example.
> Something like
>
> jack.com. IN A x.y.z.q
> ...
> q.z.y.x-in.addr.arpa. IN PTR jack.com.
Notice that jack.com. belongs to the com. zone, while q.z.y.x.in-addr.arpa.
belongs to the in-addr.arpa. zone.
> I realize the advantage of having one big reverse zone db file for your
> subnet as far as the amount of raw data entry is required, but for a small
> host it seems a little more straight forward to put everything for a domain
> in one db file. I've read through all of ch4 in dns & bind, and haven't
> come across anything that says you couldn't do it this way...
You can't do it.
> Will named accept this?
No.
> Is it just a really bad idea?
It's an interesting idea, but it assumes a picture of the world that
doesn't correspond with actual reality.
-Mitch
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