Edwardo Garcia <wdgar...@gmail.com> wrote: > > I guess bind can not consolidate like this and we have to put up with a > million /24 zone files ? I was thinking because we can do classless dele > with smaller than /24, it would work on bigger :)
It is possible! The basic idea (very briefly) is: With classless reverse DNS for prefixes longer than /24, you need a CNAME in the /24 zone pointing at each address in the classless zone. For shorter prefixes, you need a DNAME in the /16 zone pointing at each /24 in the classless zone. There are some documents explaining how we use this trick in production at https://www.dns.cam.ac.uk/domains/reverse/ with links to the less Cambridge-specific explanations in the last two paragraphs of that page, viz: https://www.dns.cam.ac.uk/domains/reverse/technical.html https://tools.ietf.org/html/draft-fanf-dnsop-rfc2317bis Tony. -- f.anthony.n.finch <d...@dotat.at> https://dotat.at/ Lundy, Fastnet: Northwest 4 or 5, occasionally 6 in Lundy. Rough or very rough, becoming moderate or rough, then moderate later. Showers. Good, occasionally moderate. _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
