types and methods for working with IP network addresses - Rust source code

 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.
 .
 Source code for Debianized Rust crate "ipnet"