Claiming it is "easy" to implement is no enough. Please show us a working implementation (a proof of concept), it should not be hard. Or is it hard for you but easy for anyone else to do ? If so, it shows that you don't have a clue what you are talking about. I find that a bit sad. In France, we call people like you "Yakafokon". It means that talk is cheap, you have a supposed solution but will let others deal with the dirty work. You will not convince any of us with words. Roll up their sleeves and show us that it works somewhere else than your own mind (any supporter of your idea can join). The idea of using "unused" fields in the IPv4 header to extend adressing space is not new, it has been discussed multiple times everywhere on the Internet. We have never seen a single working implementation. You can still believe it is because the "IPv6 sect" has been actively undermining the work... For anyone claiming to have a solution for the "IPv4 exhaustion problem", do your homework before wasting the time of hundreds of mailing list participants. Thank you in advance.