Hi, I did some work on RFC 2317-based delegation in the course of the development of NetBox DNS <https://github.com/sys4/netbox-plugin-dns> which supports RFC 2317 delegation.
Yes, the RFC is essentially correct, and using a / in a label is not forbidden either. You can do that, which doesn't mean that you should :-) Citing from https://datatracker.ietf.org/doc/html/rfc2317#section-4: > The examples here use "/" because it was felt to be more visible and > pedantic reviewers felt that the 'these are not hostnames' argument > needed to be repeated. We advise you not to be so pedantic, and to > not precisely copy the above examples, e.g. substitute a more > conservative character, such as hyphen, for "/". In fact an RFC 2317 reverse zone is nothing but a normal zone and does not need to follow the normal delegation scheme for .in-addr.arpa. You can even insert your PTR records in your forward zone, as long as you poing the CNAMEs in the parent zone at the right target. Best regards, Pete.
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