[c-nsp] IPv6 subnets for point-to-point links

Gert Doering gert at greenie.muc.de
Sun May 8 07:57:33 EDT 2005


Hi,

On Sun, May 08, 2005 at 11:09:45AM +0200, sthaug at nethelp.no wrote:
> > If you're changing anyway, you might reconsider and directly go for /64s
> > (a single /48 holds more than enough of them).  
> > 
> > There's a distinct chance that a 64 bit host ID will eventually become 
> > important to do automatic IPSEC ("crypto generated addresses") and 
> > you'll really want to avoid having to renumber all links then.
> 
> Maybe you could point us in the direction of this work? I would need good
> arguments to start using /64 on point to point links.

Well, the first stop is of course RFC3587, which very clearly says

" [ARCH] also requires that all unicast addresses, except those that
  start with binary value 000, have Interface IDs that are 64 bits long"

(ARCH is RFC3513)

As for the CGAs, I think the most important two drafts/proposed standards
are:

draft-ietf-send-cga-07.txt           --> now RFC3972
draft-haddad-mip6-cga-omipv6-04.txt

I admit I have *not* following this very closely, it's just a topic that
comes up every now and then, so I've remembered the pointer...

gert

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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de


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