Re: Updated IID length text

Mark Andrews <marka@isc.org> Thu, 19 January 2017 22:59 UTC

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To: Alexandre Petrescu <alexandre.petrescu@gmail.com>
From: Mark Andrews <marka@isc.org>
References: <148406593094.22166.2894840062954191477.idtracker@ietfa.amsl.com> <F6953234-3F85-4E28-9861-433ADD01A490@gmail.com> <m2wpdzhncn.wl-randy@psg.com> <82245ef2-cd34-9bd6-c04e-f262e285f983@gmail.com> <m2d1frhjfn.wl-randy@psg.com> <18e6e13c-e605-48ff-4906-2d5531624d64@gmail.com> <CAKD1Yr1cvZ8Y3+bHeML=Xwqr+YgDspZGnZi=jqQj4qe2kMc4zw@mail.gmail.com> <m2lguffnco.wl-randy@psg.com> <CAKD1Yr1TrTiPRdyutobmb_77XJ7guNzLrg=H_p7qi4BfQ8V=GA@mail.gmail.com> <m2d1frfm6m.wl-randy@psg.com> <CAKD1Yr2Njjd8_Mr+6TRFF6C5pdcX4yFgpFVyEkykDuytu2B8mg@mail.gmail.com> <2A5073777007277764473D78@PSB> <4596c3d4-a337-f08e-7909-f14270b7085f@gmail.com> <CAN-Dau06R3iYRpYLADhvHox4C9qdsJCuxFsJapRhOQcWT4qk_g@mail.gmail.com> <CAO42Z2weZcoHiBzN94QAQ9WGhWR16PmMMFNg=5YLmr_dhPjjpA@mail.gmail.com> <fcc7f136-b5da-527e-b495-5a2d7f7a3ce8@gmail.com> <CAKD1Yr2Y8yY5=E3VUNuJqPsxeEJ2AMJM2ShKyQhQJRiO7fq3HA@mail.gmail.com> <c1407e78-b1cc-65b6-fe5a-63688e08feb8@gmail.com> <1798bf13-b031-8ffc-78ea-7d01c4756dc9@gmail.com> <696433c7-e9 76-c334-1b67-edcf9ee45bcc@gmail.com>
Subject: Re: Updated IID length text
In-reply-to: Your message of "Thu, 19 Jan 2017 22:57:13 +0100." <696433c7-e976-c334-1b67-edcf9ee45bcc@gmail.com>
Date: Fri, 20 Jan 2017 09:58:58 +1100
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In message <696433c7-e976-c334-1b67-edcf9ee45bcc@gmail.com>om>, Alexandre Petrescu writes:
> 
> 
> Le 19/01/2017 =E0 20:26, Brian E Carpenter a =E9crit :
> > On 19/01/2017 22:26, Alexandre Petrescu wrote: ...
> >> I do not agree with the part that says "IIDs are required be 64bit
> >> long".
> >
> > But they are, today. In the move to full Standard, we cannot actually
> > change that; we can only clarify the wording.
> >
> >> If IIDs are required to be 64bit long (even if only in the
> >> 000-prefixed space) then the network can not grow at the edges, at
> >> least not with SLAAC.
> >
> > That would be true if /64 prefixes were scarce. They are not.
> 
> The mobile network operators today make it look as if the /64
> prefixes were scarce.
> 
> Maybe they dont know these /64 are not scarce, or maybe they dont care
> about scarcity (just as it's not IPv4 scarcity making them deploy IPv6).
>   The end result is the same: end users get each a /64, i.e. one single
> subnet.
> 
> Spec-wise the IID len cant change, the Ethernet IID len cant change, the
> DHCPv6 PD is not deployed, the operators only give a /64 to end user...
> one is free to pick the reason, and again the end result is the same: no
> growth at the edge.
> 
> The archi document is free to recognize reality.  If so, it should
> recognize it so in a paragraph: no growth at the edges.
> 
> Alex

>From https://getipv6.info/display/IPv6/3GPP+Mobile+Networks

Release 10 introduced DHCPv6-PD to the standards.

If you operator doesn't support 3GPP Release 10 complain to them.

>From memory DHCP-PD and the early releases of 3GPP were happening
at about the same time and 3GPP decided not to wait for DHCP-PD.

Mark

> > But that's why the proposed text is limited to currently allocated
> > unicast space - if we ever need to change this, it will be a new
> > tranche of unicast space. In any case, this is nothing to do with
> > progressing to full Standard.
> >
> > Brian
> >
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-- 
Mark Andrews, ISC
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