[ale] Question DNS Reverse Zones

[Michael B. Trausch]

On Tue, 2010-10-12 at 10:54 -0400, Derek Atkins wrote:
> Michael Trausch <mike at trausch.us> writes:
> 
> > Reverse delegation isn't possible with IPv4 records with CIDR subnets. Well,
> > kind of. Not in a std way, anyway. IPv
> > 6 records support it because of their nybble granularity.
> 
> Actually, there is a standard way to do this by using CNAME records to
> point to a CIDR-INADDR domain.  Let's say that you have the domain
> w.x.y.z/28, then you can use CIDR-Inaddr to get that domain delegated to
> you.  In y.x.w.in-addr.arpa (the ISP's zone) you put:
> 

I stand corrected.  I'll be reading RFC 2317 later today... not quite
sure how I missed that one...

> 
> > Anyway, your ISP will have a procedure to use for asking for an rDNS update.
> > It is probably buried somewhere though.
> 
> This is probably easier.
> 
> >   Mike
> >
> 
> -derek