Re: [v6ops] Fwd: New Version Notification for draft-collink-v6ops-ent64pd-01.txt

["Pascal Thubert (pthubert)" <[e-mail]>]

Hello Jen:

> So from the network perspective the prefix length does not really matter. As
> long as your address plan allows that, there is no difference between
> delegating /128 or /64 from the network scalability perspective.

The big if is whether the plan allows it. 
With what my SP gives me on my phone or my home gateway, I cannot plan for all my devices. 
IPv6 /32s are as scarce as IPv4 addresses, and the wrong decision now could be trouble later.
Why force a waste everywhere when the usage is only in a few places?

> But would make a huge difference to the host. So why not?

I fail to see why /64 makes such a big difference to any host. Maybe you could explain why it makes such a difference in the hosts where you're aware it does, and then show that it is a general concern? I have trouble to see that from my own experience.

I believe the only debate is whether there's a maximum plen or whether we can go all the way to 128, and for that debate, I believe the admin should own that, not us.

All the best;

Pascal



> -----Original Message-----
> From: v6ops <[e-mail]> On Behalf Of Jen Linkova
> Sent: vendredi 16 décembre 2022 2:24
> To: Ole Troan <[e-mail]>
> Cc: V6 Ops List <[e-mail]>; [e-mail]; draft-collink-v6ops-
> [e-mail]
> Subject: Re: [v6ops] Fwd: New Version Notification for draft-collink-v6ops-
> ent64pd-01.txt
> 
> On Fri, Dec 16, 2022 at 8:38 AM Ole Troan <[e-mail]> wrote:
> > Possibly mocking the idea of assigning a /64 to every host.
> 
> Not "every" actually, some of them (I assume you read Section 10).
> 
> > Regardless the idea of assigning a prefix to a host, even a /128, means the
> network only has a single forwarding entry per host, which is an improvement.
> 
> So from the network perspective the prefix length does not really matter. As
> long as your address plan allows that, there is no difference between
> delegating /128 or /64 from the network scalability perspective.
> But would make a huge difference to the host. So why not?
> In my case, most of the endpoints connected to my network are hosts which are
> using SLAAC. But some are CPEs which are getting /56 via PD.
> Does it matter? Not much.
> 
> >
> > Best,
> > Ole
> >
> > > On 15 Dec 2022, at 22:31, Gert Doering <[e-mail]> wrote:
> > >
> > > Hi,
> > >
> > >> On Thu, Dec 15, 2022 at 09:47:38PM +0100, Ole Troan wrote:
> > >> And DHCP PD can of course also assign a /128 prefix to the host if
> > >> that???s desired. :-)
> > >
> > > Not sure this would actually be desirable (trading multiple ND
> > > entries to multiple host routes), but I suspect you're mocking me a
> > > bit :-)
> > >
> > > Gert Doering
> > >        -- NetMaster
> > > --
> > > have you enabled IPv6 on something today...?
> > >
> > > SpaceNet AG                      Vorstand: Sebastian v. Bomhard, Michael
> Emmer
> > > Joseph-Dollinger-Bogen 14        Aufsichtsratsvors.: A. Grundner-Culemann
> > > D-80807 Muenchen                 HRB: 136055 (AG Muenchen)
> > > Tel: [phone]         USt-IdNr.: DE813185279
> 
> 
> 
> --
> SY, Jen Linkova aka Furry
> 
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