[root@noc-extension noc]# ./noc generate-ssh-keys
Traceback (most recent call last):
  File "manage.py", line 35, in <module>
    import noc.urls
  File "/opt/noc/urls.py", line 10, in <module>
    from noc.lib.app.site import site, patterns
  File "/opt/noc/lib/app/__init__.py", line 8, in <module>
    from site import *
  File "/opt/noc/lib/app/site.py", line 21, in <module>
    from django.conf.urls.defaults import *
ImportError: No module named defaults