of course if NAT is so cool, why not make _every_ hop do NAT (Naughty Awful Terrible stuff) instead of MPLS (My Protocol's a Lot Slower....) as a way of aggregate traffic engineering without recourse to level 2 (which we all know is making a lot less money than level 3 right now) i mean they are both label swapping schemes right, so if mpls is so cool, but NAT is the IP-holic approach, it ought to be fine, eh? cheers jon