Answer, US version:
18 quintillion 446 quadrillion 744 trillions 73 billions 709 millions 551 thousands 616. It’s the number of IPv6 addresses my provider has just dropped in front of my feet. I think I can launch an SSL secured website for every individual atom in the universe now. Or, it’s the number of now possible IPv4 addresses squared.
This does not necessarily mean that I like IPv6. Far from it! I’m expecting the transition to be very painful. A subtle but broad security crisis driven by the introduction of a great number of poorly understood conceptions and new devices might lead to severe acceptance problems of IPv6 or even the Internet as a whole. And people will still insist on IPv4 addresses anyway, because that ensures broader coverage. The IPv4 crisis will not be solved by IPv6, at least not in the near future.