docs: def reverse_lookup(self, name, case_sensitive=False):
          """Find all MACs registered to a OUI
          params:
           - name: the OUI name
           - case_sensitive: default to False
          returns: a dict of mac:tuples (Name, Extended Name)
          """
          if case_sensitive:
              filtr = lambda x, l: any(x == z for z in l)
          else:
              name = name.lower()
              filtr = lambda x, l: any(x == z.lower() for z in l)
          return {k: v for k, v in six.iteritems(self.__dict__)
                  if filtr(name, v)}