> On 17 Feb 2021, at 12.34, ONRUBIA AVILES Carlos (CCS/MST) > <carlos.onrubia.avi...@proximus.com> wrote: > > Hello, > > Indeed my question was on A record but the issue is on PTR record. > I can configure the following line: > > _ptr.dekil.nl. 3600 IN PTR > _81.99-129-109.adsl-dyn.isp.dekil.nl > > It works....we can use "_" in both sides. > > > But what is strange is that the following configuration do not work: > > 9.10.238.195.in-addr.arpa. 3600 IN PTR > por_tal-bis.skynet.be. > > "_" is not allowed > > Is it due to extra check by bind when it sees it is an arpa zone so no "_" > is allowed?
As previously mentioned, the RFCs expressly forbids the "_" in names. I assume that a leading "_" slips past Bind's control because it "could" be part of a valid but at compile time unknown _tcp -like label. > > > Regards, > > Carlos, > > > Sensitivity: Internal Use Only > > -----Original Message----- > From: Ondřej Surý <ond...@isc.org> > Sent: 17 February 2021 10:52 > To: ONRUBIA AVILES Carlos (CCS/MST) <carlos.onrubia.avi...@proximus.com> > Cc: Mark Andrews <ma...@isc.org>; bind-users@lists.isc.org > Subject: Re: underscore in A or PTR records > >> >> On 17. 2. 2021, at 9:50, ONRUBIA AVILES Carlos (CCS/MST) >> <carlos.onrubia.avi...@proximus.com> wrote: >> >> The issue we face is that a telecom provider ask us to implement a PTR >> record with a name like “example_try.net" > > You are mixing the two things here. If the provider has asked you to create a > PTR record, why do you keep trying to create a forward record? There’s some > information missing somewhere. > > Ondrej > -- > Ondřej Surý (He/Him) > ond...@isc.org > This e-mail cannot be used for other purposes than Proximus business use. See > more on https://www.proximus.be/maildisclaimer > _______________________________________________ > 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 _______________________________________________ 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
