Some code cleanup with traffic generation: return a generator to produce number of bytes transmitted each interval, rather than the average value
update MAC addresses on flowlet forward (bugfix)
Initial code for gratuitous arps
Add NullLink class
Set local interface/port to use NullLink to simplify some flowlet processing
Various fixes and refactorings while getting layer2-ish stuff working in POX bridge
Fix all conf files for openflow basic config; revise initial "external" port creation in of switch
Clean up logging messages in pox bridge