Re: [v6ops] "Getting IPv6 Private Addressing Right" AusNOG presentation

Mark Smith <markzzzsmith@gmail.com> Tue, 17 September 2019 12:50 UTC

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From: Mark Smith <markzzzsmith@gmail.com>
Date: Tue, 17 Sep 2019 22:50:00 +1000
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To: Alexandre Petrescu <alexandre.petrescu@gmail.com>
Cc: v6ops list <v6ops@ietf.org>
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Subject: Re: [v6ops] "Getting IPv6 Private Addressing Right" AusNOG presentation
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On Tue, 17 Sep 2019, 20:29 Alexandre Petrescu, <alexandre.petrescu@gmail.com>
wrote:

> on slide 66 it shows smartphones each assigned a /64.
>
> This is not the right thing to do, unless one agrees SLAAC should work
> with a /65 as well, for a CPE for example.
>
> One should make one's mind either one of those:
> - /64 per smartphone and /65 possible in SLAAC.
> - /64 in SLAAC and /63 per smartphone.
>

My goal wasn't to go into detail about that scenario, it was just to
"expand" people's minds beyond the idea of a single IP address per host.

The last section was a bit off topic regarding getting ULAs right, however
as I'd just given an overview of IPv6 multi-addressing, I figured I'd give
people some examples of innovations beyond what they would consider normal.

There's also the limitation that you can't downstream tether via Wifi if
the upstream is also via Wifi, which is the case in this scenario. You'd
need two Wifi radios.

Finally, there's nothing on my diagram to say that there isn't DHCPv6-PD
available via the router, or that the end-user devices aren't running
DHCPv6-PD to acquire a delegated prefix, should you somehow overcome the
Wifi radios problem.

For a bit more context, I did that presentation in about 24 minutes
(limit/goal is 25, leaving 5 minutes for questions), and I budget 10
seconds per slide. So slides 65 and 66 are no more than 20 seconds - just a
very brief overview of the idea.

Regards,
Mark.


> Alex
>
> Le 17/09/2019 à 11:17, Mark Smith a écrit :
> > Hi,
> >
> > I've noticed on a number of occasions now over a number of years that
> > some people are treating the ULA address space as though it is an
> > exact duplicate of RFC 1918, and not including a unique Global ID -
> > typically using all zeros for that part.
> >
> > So I recently prepared and presented at the AusNOG conference on
> > "Getting IPv6 Private Addressing" right. My goal wasn't just to
> > present there, but to also have a slide deck available that describes
> > exactly why we went away from Site-Locals and why globally unique ULA
> > prefixes are required.
> >
> > Feel free to share as widely as possible!
> >
> > On Slideshare:
> >
> >
> https://www.slideshare.net/MarkSmith214/ausnog-2019-getting-ipv6-private-addressing-right
> >
> > PDF:
> >
> >
> http://www.users.on.net/~markachy/AusNOG%202019%20-%20Getting%20IPv6%20Private%20Addressing%20Right.pdf
> >
> > Regards,
> > Mark.
> >
> > _______________________________________________
> > v6ops mailing list
> > v6ops@ietf.org
> > https://www.ietf.org/mailman/listinfo/v6ops
> >
>
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