These XP/2003 devices should be isolated behind a million firewalls and perferably not connected to the internet at all. If these devices can't route to some po

These XP/2003 devices should be isolated behind a million firewalls and perferably not connected to the internet at all. If these devices can't route to some portion of the net which they shouldn't have been connected to in the first place, that's hardly a loss. * Personally I think 240/4 is very reasonable since it was always reserved, 0/8 is doable but would require effort enough people might not want to do, and 127/8 is hardcoded in too many places and isn't doable. IPv6 is the future, but it isn't justified to make things now worse to make deployment faster (it won't be). IPv6 will win by default anyway.