[78658] in North American Network Operators' Group
Re: Delegating /24's from a /19
daemon@ATHENA.MIT.EDU (Robert Blayzor)
Tue Mar 15 15:12:38 2005
Date: Tue, 15 Mar 2005 15:12:10 -0500
From: Robert Blayzor <rblayzor@inoc.net>
To: alex@pilosoft.com
Cc: Mike Sawicki <fifi@HAX.ORG>, nanog@merit.edu
In-Reply-To: <Pine.LNX.4.44.0503151447530.22270-100000@bawx.pilosoft.com>
Errors-To: owner-nanog@merit.edu
alex@pilosoft.com wrote:
> Either by doing DNS delegation on the zone boundary or by SWIP'ing the
> space to the other company.
You can SWIP it yes, but that won't help DNS on small blocks like /24's.
> It is very easy to do DNS delegation, say if you have 128.0.0.0/19, and
> you want to delegate 128.0.1.0/24, in your zone file for
> 0.128.in-addr.arpa zone put
>
> 1 IN NS ns1.othercompany.com
> 1 IN NS ns2.othercompany.com
The only way it will work is to use RFC2317 or slave the zones from the
other name server. Because he does not have the entire /16 you can't
just delegate like that.
--
Robert Blayzor, BOFH
INOC, LLC
rblayzor\@(inoc.net|gmail.com)
PGP: http://www.inoc.net/~dev/
Key fingerprint = 1E02 DABE F989 BC03 3DF5 0E93 8D02 9D0B CB1A A7B0
Sure it's user-friendly...if you know what you're doing.