According to http://standards.ieee.org/regauth/groupmac/tutorial.html ,
the assertions in check_node are weeding out perfectly valid addresses:

>>> node = 0x525400123456
>>> universal_local_bit = (node >> 40L) & 2
>>> universal_local_bit
2L

This just means that the address is locally administered, but valid.
Similarly, shouldn't an individual_group_bit of 1 should just mean multicast mode?


See also: Issue 7650