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fcidr

crates.io

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.