why on earth would you want to go and hack this stuff together, knowing that it WILL NEVER WORK
Because I have read reports from people whose technical expertise I trust. They modified the TCP/IP code of Linux and FreeBSD and were able to freely use 240/4 address space to communicate between machines. This means that IT WILL WORK. The reports stated that the code patch was simple because it involved simply removing a line of code that disallowed 240/4 addresses. This demonstrates that enabling 240/4 is a very simple technical issue. The only real difficulty here is getting the right people to act on it. Companies like Cisco don't even need to wait for the IETF in order to implement a command like ip class-e as long as they ship it with a default of no ip class-e --Michael Dillon