[dns-wg] DNS reverse configuration

>> My question is related to reverse DNS configuration.
>> We are LIR for an organization (administration) owning a /16.
>> 2 DNS servers of this organization have delegation for reverse
>> requests.
>>
>> Due to IPv4 addresses exhaustion, we have dedicated the last /24 to
>> another organization (administration).  The /24 is already used.
>> Now the problem is that the (owner) organization doesn't want to host
>> our reverse records for the last /24.
>>
>> So, my question is it possible to declare 2 different DNS for
>> delegation only for the /24 ?
>
> yes, it's possible. The solution is documented in RFC 2317 "Classless
> IN-ADDR.ARPA delegation"
> (https://datatracker.ietf.org/doc/html/rfc2317).
>
> It's a little bit tricky to understand but it works well.

What?

There's no need to involve the complexities of rfc2317 when you
delegate the in-addr.arpa authority on octet boundaries.
Delegating in-addr.arpa for a /24 from a zone serving a /16
follows all the normal delegation rules of the DNS.

Regards,

- Håvard