Everything old is new again :-) I read through the SDN specs and thought &quot;Hmm, this reads like they are trying to implement ATM, badly.&quot; But one of the really fun things is that nearly all of the switching fabric patents from DEC&#x2F;Tandem&#x2F;Etc. from the 90&#x27;s are evaporating and so we can actually build something like ATM now without getting bogged down in that mess. Because of that I&#x27;m pretty optimistic that it will make things a bit better than they were.