iproute2
iproute2 is a collection of utilities for controlling and monitoring network interfaces, routing, traffic control, and tunnels in Linux systems. It replaces the older net-tools package (e.g., ifconfig, route) with a more powerful and unified set of command-line tools, primarily centered around the 'ip' command. It provides advanced features for modern networking, such as policy-based routing, traffic shaping, and network namespace management.
Developers should learn iproute2 when working on Linux-based systems, especially for DevOps, system administration, or network programming tasks, as it is the standard toolset for network configuration in modern Linux distributions. It is essential for configuring complex networking setups like containers (e.g., Docker, Kubernetes), virtual networks, or when needing fine-grained control over routing and traffic policies that net-tools cannot handle.