Summary: Aggregate list of prefixes

Description:
Aggregate takes a list of prefixes in conventional format on stdin,
and performs two optimizations to reduce the length of the prefix
list. It removes any supplied prefixes which are superfluous because
they are already included in another supplied prefix (e.g.,
203.97.2.0/24 would be removed if 203.97.0.0/17 was also supplied),
and identifies adjacent prefixes that can be combined under a single,
shorter-length prefix (e.g., 203.97.2.0/24 and 203.97.3.0/24 can be
combined into the single prefix 203.97.2.0/23).

Maintainer: nobody