I get failures in test_uuid when run inside a qemu virtual machine. It
is related to the fake MAC address used by qemu.


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FAIL: test_ipconfig_getnode (__main__.TestUUID)
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Traceback (most recent call last):
  File "Lib\test\test_uuid.py", line 326, in test_ipconfig_getnode
    self.check_node(node, 'ipconfig')
  File "Lib\test\test_uuid.py", line 288, in check_node
    self.assertEqual(universal_local_bit, 0, message)
AssertionError: 525400123456 doesn't look like a real MAC address

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FAIL: test_windll_getnode (__main__.TestUUID)
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Traceback (most recent call last):
  File "Lib\test\test_uuid.py", line 351, in test_windll_getnode
    self.check_node(uuid._windll_getnode(), 'windll')
  File "Lib\test\test_uuid.py", line 288, in check_node
    self.assertEqual(universal_local_bit, 0, message)
AssertionError: 525400123456 doesn't look like a real MAC address

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