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Re: [Add] add-enterprise-split-dns and split horizon DNS

Michael Richardson <mcr+ietf@sandelman.ca> Fri, 03 December 2021 22:47 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Eric Rescorla <ekr@rtfm.com>
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Date: Fri, 03 Dec 2021 17:47:41 -0500
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Subject: Re: [Add] add-enterprise-split-dns and split horizon DNS
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Eric Rescorla <ekr@rtfm.com> wrote:
    >> I have just watched the ADD-20211108-1600 session from IETF112.
    >> I had a conflicting session.
    >>
    >> What I took from the conversation is that many people would like to solve
    >> DDR
    >> in a split-horizon situation, and that if we could find a solution that
    >> solved typo-squatting by local resolvers that would also be very welcome.
    >> (typo-squatting is of course trivially solved by DNSSEC, which I'm told
    >> browsers refuse to implement because miliseconds...)
    >>

    > I don't know who told you this, but that's not the reason that browsers do
    > not
    > implement DNSSEC. The primary reason that browsers do not implement
    > DNSSEC

Geoff Houston said this at RIPE83 and probably also at an IETF112 side meeting.

    > because of concerns that otherwise valid resolutions will fail due to
    > recursive
    > resolvers/middleboxes incorrectly handling DNSSEC records, thus resulting
    > in increased user-visible error rates.

yet, 8.8.8.8 does DNSSEC resolution, and that doesn't seem to be a concern.


--
Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide

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