ipv6 addressing - non-routable equivalents?

[Antonio Querubin]

On Fri, 6 Oct 2000, Brian E Carpenter wrote:

> IPv4 addresses aren't globally unique these days - we lost that
> with NAT. The intent is for IPv6 to restore the uniqueness property,
> not to create some magic new property.

Not everyone uses NAT.  For those of us that don't, how does a MAC-based
IPv6 address provide uniqueness that a sequentially assigned (or any other
scheme that provides uniqueness) IPv6 address does not?

My point is that uniqueness can be obtained in different ways.  However,
the MAC-based addressing scheme buys very little that can't also be
obtained in other simpler ways that are easier to manage.  I suspect that
MAC-based addressing will fall into the 'good idea but in practice...'
category.  As I mentioned before, I think it violates the KISS principle
and I think is just one additional piece of baggage that slows down the
adoption of IPv6.