Re: [lisp] Last Call: <draft-ietf-lisp-eid-block-03.txt> (LISP EID Block) to Informational RFC

[Brian E Carpenter <[e-mail]>]

Hi Roger,

On 22/11/2012 09:04, Roger Jørgensen wrote:
> On Wed, Nov 21, 2012 at 11:01 PM, Dino Farinacci <[e-mail]> wrote:
>> Make it an allocation for EIDs and ILNP can use it too.
> 
> Somehow I hear a voice in the back of my head asking if we're talking
> about starting to use another big IPv6 block than 2000::/3 for the two
> above mention usage?
> 
> 2000::/3 for our current model of Internet with our current style of
> allocation/assignment of address space to ISP/end users
> xxxx::/3 for future modells, LISP/EID, ILNP and others?

I've been relatively relaxed for many years about allocation policy
in 2000::/3, precisely because that leaves most of the total address
space free in case we turn 2000::/3 into a swamp.

I would be a bit nervous about dedicating another /3 for unproven
use. There's a risk of it ending up unusable like Class E. So
if we are going to do this, doing it inside 2000::/3 seems a
bit safer to me.

    Brian