Binary package “aggregate” in ubuntu cosmic

ipv4 cidr prefix aggregator

 takes a list of prefixes in conventional format on stdin, and performs two
 optimisations to reduce the length of the prefix list. It removes any
 supplied prefixes which are supurfluous because they are already included in
 another supplied prefix (e.g., would be removed if was also supplied), and identifies adjacent prefixes that can
 be combined under a single, shorter-length prefix (e.g., and can be combined into the single prefix