classless in-addr.arpa

[John Heiden]

Hello all,

Is that CIDR notation I see in the zone designation?

If so, where can I find more information to using that?

Or better yet, if you take a "subnet" which is broken down
by other than the usual 255.255.255.0 convention, meaning
I would like to use 255.255.255.224 instead, how would I
set up reverse DNS for that?  I would think that using
224/27.xxx.yyy.zzz would be the ideal way to set it up, assuming
I am guessing right on what the below all means.

Anyway, I appreciate any and all input I get back.



John

Barry Margolin wrote:

> In article <a75muf$lf8 at pub3.rc.vix.com>,
> Guido Fortunati  <zuez at disillusion.org> wrote:
> >
> >Hello,
> >I am trying to set up a classless in-addr.arpa delegation.
> >We were told to set up a 0/27.61.74.216.in-addr.arpa zone
> >and here is what i added to named.conf:
> >
> >zone "0/27.61.74.216.in-addr.arpa" {
> >        type master;
> >        file "61.74.216.in-addr.arpa";
> >
> >
> >and this is what the zone file looks like:
> >
> >$TTL    1800
> >@               IN SOA  mydns1..      mydns2.(
> >                        2002031800 ; serial
> >                        3600 ; refresh
> >                        900 ; retry
> >                        1209600 ; expire
> >                        43200 ; default_ttl
> >                        )
> >               IN      NS       mydns.
> >               IN      NS       mydns2.
> >1       IN      PTR     2600.irv-ca.us.whatever.
> >2      IN      PTR     wor2d.
> >3      IN      PTR     word.
> >4      IN      PTR     word.
> >5      IN      PTR     word.
> >
> >
> >
> >what is wrong with this?.. i see our provider trying to do AXFRs, i guess
> >they pull down the information from our ns and then spread it around the
> >world, but i dont think this zone is right, i think i need some $ORIGIN?
> >sorry for the ignorant question, any help will be strongly appreciated.
>
> There should be a space before the '(' on the SOA line, and there shouldn't
> be two '.' characters in 'mydns1..'.  Other than that, it looks
> syntactically correct, although most of the hostnames are obviously bogus.
> You don't need $ORIGIN, it defaults to the name of the zone from the
> named.conf file.
>
> --
> Barry Margolin, barmar at genuity.net
> Genuity, Woburn, MA
> *** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
> Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.