I think that I shall never see   a structure more wasteful than a tree.   Most links remain idle and unused   while others are overloaded and abused.   And with each failure comes disruption   caused by the ensuing tree construction.   Thus, L2 must discard its spanner,   requiring flooding in a different manner.   For the tree's fragile waste to be abated,   trim no branches and detect packets duplicated.   (With apologies to Radia Perlman and Joyce Kilmer.)
['James Murphy McCauley', 'Alice Sheng', 'Ethan J. Jackson', 'Barath Raghavan', 'Sylvia Ratnasamy', 'Scott Shenker']
Taking an AXE to L2 Spanning Trees