On 05/11/2018 14:03, Milan Sýkora wrote: Hi Milan,
> is any chance to achieve this behavior in the superior zone 0.10.in-addr. > arpa > > or I have to always create zone 0.0.10.in-addr.arpa on my server with listed > records? I hoped for something more automated. > > Because I just want to delegate the class to another server, it seems to be > a huge adjustment in the case of another subnet/class ( /25 or /26 ). RFC 2317-style classless delegation was designed for IPv4 networks with prefixes in the range 25 to 31. For prefixes larger than 24, you're supposed to just create /24-sized zones and delegate from the parent zone. In your example, if you want reverse DNS for 10.0.0.0/24, then you should create a zone 0.0.10.in-addr.arpa. And then in 10.in-addr.arpa, you should add NS records for 0.0.10.in-addr.arpa pointing at the name servers serving that zone. If you really want to do RFC 2317-style delegation for larger prefixes, you can, and it will also work, but I do not recommend it. You should understand DNS very well, and be an expert before you attempt to do that, because it's a configuration that almost no-one uses, and you'll find it hard to get help with it. Also, when debugging, it looks confusing to most people. Regards, Anand Buddhdev DNS Engineer @ RIPE NCC -- https://lists.nic.cz/cgi-bin/mailman/listinfo/knot-dns-users
