Subject: Re: DNS lookup for internal adresses
To: henry nelson <netb@irm.nara.kindai.ac.jp>
From: None <kpneal@pobox.com>
List: netbsd-users
Date: 03/15/2002 00:02:39
On Thu, Mar 14, 2002 at 08:30:41PM +0900, henry nelson wrote:
> On Wed, Mar 13, 2002 at 09:37:04PM -0800, Michael K. Sanders wrote:
> > You want to do this for a non-RFC1918 block, right?  It's quite possible
> > and done frequently, your provider just has to be willing to set it up.
> > See RFC 2317 on Classless IN-ADDR.ARPA delegation:
> > 
> > 	http://www.faqs.org/rfcs/rfc2317.html
> 
> Thanks for this great reference. I think it will make my situation better
> than it has been, but it won't work for me as a "cookbook" solution (which I
> confess I need), since the examples there are of small "blocks", whereas I
> have a discontinuous group of a dozen IPs spread from 17. to 196. Am I just

Not a problem. Here's the relevant part of my zone file (externally visible
server for neutralgood.org):

209-42-217-33   IN	PTR	tome
209-42-217-34	IN	PTR	stone
209-42-217-35	IN	PTR	ducttape
209-42-217-46   IN	PTR	tesseract

If I'm not mistaken, you'd just need something like that on your end
and the matching CNAMEs on your ISP's end.
-- 
Kevin P. Neal                                http://www.pobox.com/~kpn/

"It sounded pretty good, but it's hard to tell how it will work out
in practice." -- Dennis Ritchie, ~1977, "Summary of a DEC 32-bit machine"