In message <20201130013319.xddpolsgaynzlza6@benm-laptop>, Ben Maddison <[email protected]> wrote:
>This seems fairly clear, to me at least, that having delegations at the >same authoritative nameserver for a subdomain and a >subdomain-of-a-subdomain is problematic. I don't see that. >Consider: >ns-a delegates foo.example.com to ns-b > and bar.foo.example.com to ns-c >ns-b delegates bar.foo.example.com to ns-d > >Who is authoritative for host.bar.foo.example.com? My understanding is that the delegation of DNS authority works a lot like routing, i.e. in any case where two or more DNS authority delegations -could- theoretically be applicable, the most specific DNS delegation wins. Of course, if there are ties, where each of two or more delegations are equally specific, then that's problematic. But I don't think we are discussing such cases at the moment. I freely admit that I may perhaps not be on entirely solid ground when it comes to this "most specific wins" rule, but I do believe that's how DNS works. If I am wrong about that, I will be happy to be corrected. Regards, rfg _______________________________________________ Community-Discuss mailing list [email protected] https://lists.afrinic.net/mailman/listinfo/community-discuss
