NameError: global name 'v2_api_required_str' is not defined

[regentgal]

Any call to the Floating IP calls results in:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "dopy/manager.py", line 471, in all_floating_ips
    raise DoError(v2_api_required_str)
NameError: global name 'v2_api_required_str' is not defined