[e2e] where end-to-end ends

[Panos GEVROS]

what is causing confusion i think is that the "end-to-end argument" and the 
notion of "end-to-end communication" are different things,
(while the first is about functionality distribution) the second is relative 
to the communication abstraction offered by the protocol stack

(at a given level) when the point initiatitng communication is unaware of 
intermediaries this makes communication "look" end-to-end *from this level*
with this in mind i see email as e2e at the application level and TCP as e2e  
protocol

Panos