On 16/12/15 20:32, Phillip Hallam-Baker wrote:
> On Wed, Dec 16, 2015 at 3:27 PM, Stephen Farrell
> <[email protected]> wrote:
>>
>>
>> On 16/12/15 20:11, Michael Wyraz wrote:
>>> Stephen,
>>>
>>> I fear I have no idea what you mean with a "suffix list" and such.
>>
>> (Caveat: I'm very much an amateur at DNS issues, I hope someone
>> else provides a better/more accurate response if one's needed.)
>>
>> Pretty much all mechanisms of the kind you envisage end up
>> requiring a way to allow the "real" authority for a set of
>> names to control what happens deeper in the hierarchy. So
>> tcd.ie could decide what cs.tcd.ie are allowed to do with
>> acme for example. That means you end up needing to know
>> roughly where the zone cuts are, which is a hard problem
>> in general. The public suffix list is how that's mostly
>> done in the web and dbound is (an IETF activity) trying to
>> tease apart the various uses of that.
>>
>> So one of the problems with what you suggest is that the
>> "right" place to look for my web servers is two up in the
>> hierarchy and not the public suffix and not one up.
> 
> No, that isn't what we do for DV certs unless they are wildcard certs.
> 
> You are not going to be issuing wildcard certs with this mousetrap
> built in this particular way for a long time.

Right. But any proposal to use SRV for a DV-equivalent seems to
me to open this can of worms. Feel free to write the I-D that
shows that I'm wrong though as I may well be misinterpreting
what Michael or you mean.

S.




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