Hi David. "recursion yes;" tells named that it can (if it has to) make queries to other places if it needs more information in order to answer a client query. Pure authoritative servers shouldn't need it and should have "recursion no;". So the first question is, do your servers make queries out to other places? If so, recursion must be enabled. Secondly, do you have "minimal-responses" configured on either/both servers? If so, what is it set to? There were changes in 9.16 so maybe these explain your observations.
Cheers, Greg On Tue, 24 Jan 2023 at 16:49, David Carvalho via bind-users < bind-users@lists.isc.org> wrote: > Hello. > > I hope someone could help to understand the following. > > I have “my.domain.pt” and a master and slave server for the “my” part. I > have been using “recursion yes” in both named.conf, as I want them to be > both authoritative and cache for my clients. > > Last week I migrated my slave DNS server to version 9.16 and only today, > after having issues with the primary server migration, I realized that for > most queries, my slave DNS does not answer the “ADDITIONAL SECTION” unless > I specify “+norec” with the dig command. > > > > My named.conf files only differ in IPs and “master/slave” setting. > > > > My questions: > > Should I use recursion on both? (Bear in mind that I also want them to > provide chache to clients) > > Why do I need “dig +norec” to get the exact output on my slave server? > > > > Kind regards > > David > -- > 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 >
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