Thanks Havard. Appreciate the candor. This was my understanding given the articles and documentation that I reviewed.
Dan -----Original Message----- From: Havard Eidnes <h...@uninett.no> Sent: Monday, January 24, 2022 10:13 AM To: LeBlanc, Daniel James <daniel.lebl...@bellaliant.ca> Cc: bind-users@lists.isc.org Subject: [EXT]Re: Response Policy Regular Expression Question > I am trying to create an NXDOMAIN response-policy for the following > example domain: > > x.yy.*.*.dns.* > > I have reviewed RFC1034 & RFC4592 and many online articles and blog > postings, but thus far have not found anything suggesting that this > type of match is possible. Am I expecting too much? > :) In a word: yes. If I'm not terribly mistaken, the DNS response policy code uses normal DNS lookup mechanisms. What you see sometimes in the DNS is '*' which is a "wildard". It is not used to form Regular Expressions(!) Furthermore, it has the limitation that it can only occur once in a query, and match a single label at the leftmost edge of the looked-up name, and if registered in a zone, its data will be returned if the looked-up name doesn't otherwise exist in the zone (or if it's explicitly queried for). Regards, - Håvard ------------------------------------------------------------------------------ External Email: Please use caution when opening links and attachments / Courriel externe: Soyez prudent avec les liens et documents joints _______________________________________________ Please 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
