Det finns 340,282,366,920,938,463,463,374,607,431,768,211,456 (2^128) IPv6-adresser.

“To put this into perspective: there are currently 130 million people born each year. If this number of births remains the same until the sun goes dark in 5 billion years, and all of these people live to be 72 years old, they can all have 53 times the address space of the IPv4 Internet for every second of their lives.”

“The good news is that because the IPv6 address space is so large, randomly scanning for systems that are vulnerable is completely infeasible. The story goes that at the height of the self-propagating malware explosion a few years ago, an unpatched Windows system would be infected faster than it could download the necessary security updates. With IPv6, that is simply impossible: even with a billion infected hosts each scanning a billion IPv6 addresses per second, it takes more than a hundred million years to scan just the IPv6 address space that’s given out to ISPs right now, which is about 0.01 percent of what’s available.”

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