It's way more than stateless autoconfig - privacy addresses and a host of other protocols assume the last /64 is a host address and flexible. What a horrible a

It's way more than stateless autoconfig - privacy addresses and a host of other protocols assume the last /64 is a host address and flexible. What a horrible assumption to tack on though - it should have been codified in the v6 RFC if that's how it's going to work.