rust-ipnet 2.3.0 Work with IPv4 and IPv6 network addresses

This package provides types and useful methods for working with IPv4 and IPv6 network addresses, commonly called IP prefixes. The new IpNet, Ipv4Net, and Ipv6Net types build on the existing IpAddr, Ipv4Addr, and Ipv6Addr types already provided in Rust's standard library and align to their design to stay consistent. The module also provides useful traits that extend Ipv4Addr and Ipv6Addr with methods for Add, Sub, BitAnd, and BitOr operations. The module only uses stable feature so it is guaranteed to compile using the stable toolchain.