Fragmented Classless Inter-Domain Routing (FCIDR)
A library exposing a data structure to represent a set of CIDR ranges and easily manipulate its entries using set-like operations.
This data structure can be applied, for example, in configuring firewalls that implicitly deny (AWS Security Groups) using a rule set that explicitly expresses rules for both allow and deny.
Note Currently, only IPv4 is supported. IPv6 support is tracked by #6.