On 21.7.2015 10:55, Michael StJohns wrote:
> On 7/21/2015 4:32 AM, David Conrad wrote:
>> On Jul 21, 2015, at 9:07 AM, Michael StJohns <m...@nthpermutation.com> wrote:
>>> The decision with respect to "clients ... would see some benefit..."  has
>>> to be based on what the servers know.
>> Yes, and the information provided by the mechanism described by Warren's
>> draft would provide at least some information to the servers as to state of
>> the clients.
> 
> And that's the point.  It's not a benefit to the client.  It's a benefit to
> the server.

I oppose this. It is very much to benefit of the client to inform us that the
client is not ready for roll-over. We may decide not to break it if we know
that it is not ready.

>>> Causing a client to emit something that isn't necessary to get the service
>>> is generally considered a requirement for opt-in type of consideration.
>> Do you disable "Software Update"-like probes on your operating system(s) and
>> applications?
> 
> On about half of them I disable things.  I never, ever allow them to
> automatically install software.  But the key point is that I personally decide
> whether or not to allow the software to send the probes in the first place  -
> e.g. OPT IN as I indicated above.   I pretty much say "NO" to "do you want to
> help us improve the product by sending blinded data" questions and I'm pretty
> sure that's not an unusual approach for other IETF attendees.
> 
> You cannot assume that every single new installation of modified client code 
> to do Warren's stuff will agree that sending the root this data is of use to
> them, and they may not agree to enable the protocol.  I pretty much believe
> you need to give them the option to say no.

This whole debate is about MUST vs. SHOULD (opt-in/out), is that right?

-- 
Petr Spacek  @  Red Hat

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