[e2e] Discrete IP - retake

[Noel Chiappa]

    > From: Jon Crowcroft <Jon.Crowcroft at cl.cam.ac.uk>

    > the problem you have to solve when you have a set of domains running
    > different protocols, is a system tp provide routing between translation
    > points - this is something we did before the internet was called the
    > internet - back in 1980, there were several different protocol families
    > in the world 

And those of us who lived through it have no wish to repeat the experience!
There's a reason I came up with the "ships in the night" approach (originally
for the MIT backbone, but it spread...).

	Noel