[ppml] getting converts to V6

[Randy Bush]

> Yep.  I've been told there are ISPs out there that already are  
> dealing with > 500K routes and are seeing convergence issues. And  
> when these ISPs go to their vendors and ask for the roadmap for  
> hardware, the upgrade deployment cycle outstrips the hardware  
> development cycle.

funny.  just last week, the big two router vendors stood in front of us at
ripe and said two million prefixes today and ten million in a few years.

randy