aggregate6 will compress an unsorted list of IP prefixes (both IPv4 and IPv6).

Takes a list of IPv6 prefixes in conventional format on stdin, and performs two optimisations to attempt to reduce the length of the prefix list. The first optimisation is to remove any supplied prefixes which are superfluous because they are already included in another supplied prefix. For example, 2001:67c:208c:10::/64 would be removed if 2001:67c:208c::/48 was also supplied.

The second optimisation identifies adjacent prefixes that can be combined under a single, shorter-length prefix. For example, 2001:67c:208c::/48 and 2001:67c:208d::/48 can be combined into the single prefix 2001:67c:208c::/47.

$ pip install aggregate6

Either provide the list of IPv4 and IPv prefixes on STDIN, or give filenames containing lists of IPv6 prefixes as arguments.

$ # via STDIN
$ cat file_with_list_of_prefixes | aggregate6
   ... output ...

$ # with a filename as argument
$ aggregate6 file_with_list_of_prefixes [ ... optional_other_prefix_lists ]
   ... output ...

$ # Whitespace separated works too
$ echo 2001:67c:208c::/48 2000::/3 | aggregate6
2000::/3

$ # You can combine IPv4 and IPv6
$ echo 10.0.0.0/16 10.0.0.0/24 2000::/3 | aggregate6
10.0.0.0/16
2000::/3

$ # Or display only a specific AFI
$ echo 10.0.0.0/16 10.0.0.0/24 2000::/3 | aggregate6 -4
10.0.0.0/16

See aggregate6 -h for a full list of options.

>>> import from aggregate6 import aggregate
>>> aggregate(["10.0.0.0/8", "10.0.0.0/24"])
['10.0.0.0/8']
>>>

Please report bugs at https://github.com/job/aggregate6/issues

Job Snijders [email protected]