>> 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
