Re: IPv6 deployment [was Re: Recent Internet governance events]

[SM <[e-mail]>]

At 16:49 21-11-2013, John Levine wrote:
> >Of course, the dual stack model only works while you still have enough
> >v4 space for one-per-customer.
>
>Why can't you run dual stack with CGN?

This takes you [1] down a path which goes against architectural 
assumptions.  A CGN creates fractions of the addressing space.  As 
the addressing space per customer diminishes the Internet service 
vendor will have to reduce the level of access sold to the customer.

At 08:36 22-11-2013, Ted Lemon wrote:
>CGNs are expensive.   Why would people prefer to maintain them if 
>the IPv6 infrastructure was working?   I don't get the impression 
>that anybody wants CGNs around forever.

It's not that people want CGNs around for a long time.  It's an 
irrational choice [2] as people might feel that they are wasting what 
they have paid for.

Regards,
-sm

1. Used in the general sense
2. http://www.oxfamblogs.org/fp2p/wp-content/uploads/rational_choice.jpg