Re: [v6ops] Implementation Status of PREF64

David Farmer <farmer@umn.edu> Fri, 01 October 2021 05:15 UTC

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From: David Farmer <farmer@umn.edu>
Date: Fri, 01 Oct 2021 00:14:50 -0500
Message-ID: <CAN-Dau1z0q0R61x7iY+Wg_cFRU0jmqr+fR0y=bSXxj+K-n722w@mail.gmail.com>
To: Lorenzo Colitti <lorenzo=40google.com@dmarc.ietf.org>
Cc: Owen DeLong <owen=40delong.com@dmarc.ietf.org>, v6ops list <v6ops@ietf.org>
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Subject: Re: [v6ops] Implementation Status of PREF64
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On Thu, Sep 30, 2021 at 11:12 PM Lorenzo Colitti <lorenzo=
40google.com@dmarc.ietf.org> wrote:

> On Fri, Oct 1, 2021 at 12:56 PM Owen DeLong <owen=
> 40delong.com@dmarc.ietf.org> wrote:
>
>> If you want to come up with other solutions in parallel, be my guest, but
>> please make it possible for android to obtain an address via IA_NA.
>>
>
> Before doing that I think we should explore better solutions. Once we find
> a solution that meets enterprise needs and has better properties,
> implementing IA_NA will be a lot less cocerning in terms of long-term
> impact on IPv6 deployment, because greenfield enterprise deployments that
> aren't already wedded to IPv4 and DHCP will be able to use the new solution.
>

You are saying you object to the fact that with IA_NA the operator can
choose to only assign one address. I will concur that assigning only one
IPv6 address is utter stupidity.

So, is there a compromise somewhere between 1 and 2^64 addresses to be had?
Isn't it possible to request multiple addresses, that is to request
multiple IA_NA options? Then if the server returns a number of addresses
below a threshold, then refuse the addresses?

If there is no compromise between 1 and 2^64 possible, then your one
address objection is a smokescreen.  And, you are really saying that a host
must be able to select the IIDs it chooses and you are rejecting the
managed address paradigm altogether, you seem to be say the operator can't
tell the host which IIDs it is permitted to use. In my mind, the managed
address paradigm seems pretty fundamental to the protection of highly
restricted data.

Thanks.



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