Re: [DNSOP] abandoning ANAME and standardizing CNAME at apex

Paul Vixie <paul@redbarn.org> Mon, 25 June 2018 17:00 UTC

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Date: Mon, 25 Jun 2018 10:00:33 -0700
From: Paul Vixie <paul@redbarn.org>
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To: Tony Finch <dot@dotat.at>
CC: Paul Wouters <paul@nohats.ca>, dnsop <dnsop@ietf.org>
References: <CAJhMdTO2kj+nUqESg3ew=wwZuB9OzkJE6pST=mae7pHiEk4-Qw@mail.gmail.com> <20180619190213.B76962846E19@ary.qy> <20180622182752.GA83312@isc.org> <af9b422a-90a0-b204-70d6-12566d7b65dc@bellis.me.uk> <alpine.DEB.2.11.1806251459510.916@grey.csi.cam.ac.uk> <alpine.LRH.2.21.1806251104490.18905@bofh.nohats.ca> <alpine.DEB.2.11.1806251637060.916@grey.csi.cam.ac.uk> <alpine.LRH.2.21.1806251240410.32227@bofh.nohats.ca> <alpine.DEB.2.11.1806251756120.916@grey.csi.cam.ac.uk>
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Subject: Re: [DNSOP] abandoning ANAME and standardizing CNAME at apex
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Tony Finch wrote:
> Paul Wouters<paul@nohats.ca>;  wrote:
>> I understand, I just disagree this is the right way. I don't see why
>> this entire problem shouldn't be resolved at the well, resolver level.
>
> I don't see how that can be deployed in a way that is compatible with
> existing software.

there are now a half dozen x.x.x.x (where x is the same in all four 
octets) public anycast resolvers. if they can all be upgraded to handle 
dnssec or ECS, they can all be upgraded to handle something like ANAME.

the "resolver" here is the recursive, not the stub. stubs believe what 
they hear, for good or ill. if we need to change what they hear, it's 
not as impossible as changing what they understand.

-- 
P Vixie