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This pull request is almost complete: https://github.com/openwisp/django-ipam/pull/54

Some final steps are missing, help us to finish it, do the following:

• install django-ipam for development
• switch to the branch used in the pull request
• read the discussion, apply the fix suggested in the review
• ensure all tests pass
• send a new pull request (follow our commit message style and pull request guidelines please)