Re: [DNSOP] Wildcard junk vs NXDOMAIN junk
Paul Vixie <paul@redbarn.org> Fri, 08 April 2022 02:40 UTC
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To: Mark Andrews <marka@isc.org>
Cc: Paul Vixie <paul=40redbarn.org@dmarc.ietf.org>, "dnsop@ietf.org WG" <dnsop@ietf.org>
References: <9355318d-a779-400f-9e3b-27b53fa3e9bf@iecc.com> <CAH1iCioHeP93Txqk=fO0z5UdPX5XmDsFs5GzggySTmEAJDRrcg@mail.gmail.com> <0a5f3ac5-1901-28f5-c977-806d684710de@redbarn.org> <E1ADC675-CA48-457C-B3B0-451879CAE7E3@isc.org>
From: Paul Vixie <paul@redbarn.org>
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Date: Thu, 07 Apr 2022 19:40:36 -0700
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Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/K2SfNl0xRFT2GPORgyZeb-K_aNE>
Subject: Re: [DNSOP] Wildcard junk vs NXDOMAIN junk
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Mark Andrews wrote on 2022-04-07 17:21: > > >> On 8 Apr 2022, at 09:12, Paul Vixie >> <paul=40redbarn.org@dmarc.ietf.org> wrote: ... >> >> wildcard synthesis should always have been resolver-side. now we >> live like this. a zero-length EDNS option with a name like REALWILD >> that asked the authority server to include *.example.com as an >> answer's owner name (rather than www.example.com by synthesis) is >> probably the way out of this hell. > > Wildcard synthesis in the resolver only works if you have NSEC/NSEC3 > records (or the equivalent) that shows the non-existence of the QNAME > otherwise the resolver would replace explicit data with synthesised > data. Real wildcard + covering NSEC/NSEC3 range would work. Getting > rid of OPTOUT would also help as you can’t synthesise using an > OPTOUT NSEC3 record. Zone operators can turn off OPTOUT today. a feature that only works with dnssec sounds good to me. -- P Vixie
- [DNSOP] Wildcard junk vs NXDOMAIN junk John R. Levine
- Re: [DNSOP] Wildcard junk vs NXDOMAIN junk Patrik Fältström
- Re: [DNSOP] Wildcard junk vs NXDOMAIN junk Brian Dickson
- Re: [DNSOP] Wildcard junk vs NXDOMAIN junk Paul Vixie
- Re: [DNSOP] Wildcard junk vs NXDOMAIN junk Mark Andrews
- Re: [DNSOP] Wildcard junk vs NXDOMAIN junk Paul Vixie