James Hess wrote:
All I need to do is run a popular web site on the IPv6 Internet, and I get all the addresses of connected hosts I want. That address-space-scanning is hard is nearly irrelevant.Fortunately, the IPv6 address space is so large and sparse, that scanning it would be quite a feat, even if a random outside attacker already knew for a fact that a certain /64 probably contains avulnerable host.
Matthew Kaufman