Re: Why IPv6 is a must?

[Steve Deering <deering at cisco.com>]

At 3:23 PM -0500 11/28/01, Eric Rosen wrote:
>Granted, it's  easier to  talk about the  evils of  NAT than to  explain how
>billions of  new routable addresses  are going to  be added to  the existing
>routing system. 

It's not the size (of the address) that matters, but how you use it.

Whether you assign one IPv4 address per subscriber and make them use NAT,
or give them each a block of a zillion IPv6 addresses, the routing cost
is the same.

If you really believe it's the total number of addresses that determines
the size/cost of the routing system, you'd better start working on moving
the world away from IPv4 to IPv-1 with 17-bit addresses.

Steve