[ih] order of source and destination address in IP header

[David P. Reed]

Oops, Dave - Your comment showed I said it wrong.  I meant IP was *among 
gateways* not between them, to achieve an end-to-end goal, of course.   
The point was that it was not intended to be the framing structure and 
addressing that was used by packet switches within the networks (what we 
now call AS's).   We Internet guys expected that our role was to be an 
overlay.  Only in some of our wildest dreams were we expecting that 
people would build IP-native networks.