Reverse Zone CIDR

[Anand Buddhdev]

Hi Jonathan,

If it's a /23, may I suggest creating two reverse zones, for each of the
/24s in that prefix? It's much simpler.

RFC 2317-style delegation, while possible for a /23, was designed for
IPv4 prefixes smaller than a /24.

Regards,

Anand Buddhdev
RIPE NCC

On 25/05/16 11:37, Jonathan Del Campo wrote:
> Hello,
> 
> We are trying to create a zone for a /23 subnet (192.168.222.0/23), but we
> can't get the reverse zone working.
> 
> There is our config :
> 
> */etc/named/domain.int.zonefile :*
> 
> zone "0/23.222.168.192.in-addr.arpa" IN {
>     type master;
>     file "dynamic/0-23.222.168.192.in-addr.arpa";
> };
> 
> 
> 
> */var/named/dynamic/0-23.222.168.192.in-addr.arpa :*
> $ORIGIN .
> $TTL 3600       ; 1 hour
> 0/23.222.168.192.in-addr.arpa IN SOA    dns1.domain.int. sysadmin.domain.eu.
> (
>                                 2013021143 ; serial
>                                 1200       ; refresh (20 minutes)
>                                 3600       ; retry (1 hour)
>                                 1209600    ; expire (2 weeks)
>                                 3600       ; minimum (1 hour)
>                                 )
>                         NS      DNS1.domain.int.
> $ORIGIN 0/23.222.168.192.in-addr.arpa.
> $TTL 86400      ; 1 day
> 102                       PTR     vegeta.domain.int.
> ...
> 
> 
> I don't know if the naming convention is correct ( 0-23 vs 0/23 ) ?
> 
> Can you please help ?
> 
> 
> 
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