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Re: [v6ops] I-D Action: draft-colitti-v6ops-host-addr-availability-01.txt

Gert Doering <gert@space.net> Tue, 28 July 2015 12:11 UTC

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Date: Tue, 28 Jul 2015 14:11:06 +0200
From: Gert Doering <gert@space.net>
To: Lorenzo Colitti <lorenzo@google.com>
Message-ID: <20150728121106.GA84167@Space.Net>
References: <55B1ED14.6030501@gmail.com> <m1ZIZ4w-0000CbC@stereo.hq.phicoh.net> <CAKD1Yr2z6T86gmQMPZwbgFB4mdt7=xWNuei5jaQg=vpG7-zLVg@mail.gmail.com> <m1ZJdjZ-0000CcC@stereo.hq.phicoh.net> <20150727091241.GL84167@Space.Net> <m1ZJfOr-0000CgC@stereo.hq.phicoh.net> <C9C3FBC4-44F3-45D2-B8C4-3725396E5D40@nominum.com> <CAPi140Mx96dBgeaCkrsDD+-J85OZDo5Di+gHTBiaGDzYK2us4w@mail.gmail.com> <20150728115944.GZ84167@Space.Net> <CAKD1Yr2eDdVSF4zR2ffWtu0XRs1Zf5fU+NYFVHyTeRvKKvim7A@mail.gmail.com>
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Subject: Re: [v6ops] I-D Action: draft-colitti-v6ops-host-addr-availability-01.txt
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Hi,

On Tue, Jul 28, 2015 at 09:05:05PM +0900, Lorenzo Colitti wrote:
> On Tue, Jul 28, 2015 at 8:59 PM, Gert Doering <gert@space.net> wrote:
> 
> > (Say, 1000 hosts, all doing DHCP-PD and requesting a single /64, you'd
> > need to provision at least a /54 per segment - which will increase your
> > prefix usage enormously)
> >
> > Is that what you want?
> 
> It's almost exactly what we have today in IPv4 - see the section in the
> draft on address space management.

Yeah, but who wants to replicate IPv4?  (Besides, it isn't :-) )

> That said - you don't have this problem if you use SLAAC.

If you use SLAAC your devices do not need to store 20 ND associations?

I understood Andrew that this was the reason why he thinks DHCPv6-PD
scales better than getting 20 addresses by other means...

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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