Additionally this behaviour is specified in RFC1034 so every nameserver should do this.
-- Mark Andrews > On 14 Feb 2024, at 02:24, Friesen, Don CITZ:EX via bind-users > <bind-users@lists.isc.org> wrote: > > Andy, > The existence of 8.f.0.f.1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa as an > authoritative zone on the server has higher relevance than the delegation > inside another zone. The answer comes from the authoritative zone, no need > to follow the delegation. > > Don Friesen > > -----Original Message----- > From: bind-users <bind-users-boun...@lists.isc.org> On Behalf Of Andy Smith > Sent: Tuesday, February 13, 2024 6:46 AM > To: bind-users@lists.isc.org > Subject: Re: Answers from subzone even when superzone has a delegation > elsewhere > > [You don't often get email from a...@strugglers.net. Learn why this is > important at https://aka.ms/LearnAboutSenderIdentification ] > > [EXTERNAL] This email came from an external source. Only open attachments or > links that you are expecting from a known sender. > > > Hi Don, > > Yes. > > If you want actual names to look at, these zones are both present on the same > servers: > > 1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa > 8.f.0.f.1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa > > However, the presence of 8.f.0.f.1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa is a > mistake and in the mean time someone has changed the delegation inside > 1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa to be: > > 8.f.0.f NS ns-auto.bitfolk.com. > > A query for, say: > > 2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.f.0.f.1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa. IN > PTR > > is answered NXDOMAIN because it does not exist inside the > 8.f.0.f.1.f.1.0.8.a.b.0.1.0.0.2.ip6.arpa zone file, instead of following that > delegation to ns-auto.bitfolk.com. > > Thanks, > Andy > >> On Tue, Feb 13, 2024 at 02:31:32PM +0000, Friesen, Don CITZ:EX via >> bind-users wrote: >> Andy, You do also have the A record glue for elsewhere.example.com in the >> example.com zone, right? Just checking. >> >> Don Friesen > -- > Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from > this list > > ISC funds the development of this software with paid support subscriptions. > Contact us at https://www.isc.org/contact/ for more information. > > > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users > -- > Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from > this list > > ISC funds the development of this software with paid support subscriptions. > Contact us at https://www.isc.org/contact/ for more information. > > > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users -- Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
