Summarizing an IP address range

As I've mentioned previously, I've found IPy python module to be extremely useful for manipulating IP addresses. One such use is a script I've written to summarize an IP address range into the networks that make it up. The script supports both IPv4 and IPv6 addresses.

Example usage:

$ ./summarize.py 192.168.1.0 192.168.1.8
192.168.1.0/29
192.168.1.8

or alternatively as a python module:

>>> from summarize import summarize
>>> summarize('192.168.1.0', '192.168.1.254')
['192.168.1.0/25', '192.168.1.128/26', '192.168.1.192/27', '192.168.1.224/28', '192.168.1.240/29', '192.168.1.248/30', '192.168.1.252/31', '192.168.1.254']

The source for this script is available for download from the Wad of Stuff repository.