Task-centered iproute2 user guide

This is a task-centered user guide for iproute2, a Linux networking tool that provides comprehensive instructions for managing network interfaces, addresses, routing tables, and various networking features including bridges, tunnels, VLANs, and virtual devices. The guide is organized by functional categories such as IPv4/IPv6 addresses, neighbor tables, links, bridges, and routing, offering practical command examples for each networking task.