> we did. it was called A6. now we're apparently on to something else, > like for example nothing, or for example pretending it's not a problem > after all. a6 wasn't even a start of a solution to the renumbering problem. at best, it was a distraction, and a disaster waiting to happen. note that a6 wouldn't have done anything to relieve the burden associated with the case you cited - a host changing its network interface.