Re: [address-policy-wg] Re: [ipv6-wg] closed network and need for globa l uniqe IP space

[Gert Doering <]

Hi,

On Fri, Nov 25, 2005 at 11:25:07AM +0100, Roger Jorgensen wrote:
> > On Fri, Nov 25, 2005 at 10:12:35AM +0100, Roger Jorgensen wrote:
> > > The solutions aren't really that tricky but let me mention a few 
> > > options...
> > > * Site local would have solved our problem BUT it's obsolite, quite 
> > > stupid really.
> > 
> > That's why there are ULA ("unique local addresses") now.  They should
> > fit your needs pretty well - as much addresses as you want, and the
> > guarantee to be not officially assigned to anyone.
> 
> what about the other part about globaly unique when we connect to other 
> network of the same type?

The idea is that ULAs are random-generated in a way that makes it "fairly
unlikely" that you end up in an address collision.  But there is no
guarantee, of course.

There is also a second sort of ULAs that are globally unique but still
private, but as far as I know, there is no registry yet that will hand
them out.  So these can't be used yet.

Gert Doering
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