Retis: Tracing Packets in the Linux Networking Stack
2024-12-19
Retis is a powerful tool that uses eBPF probes to trace packets within the Linux networking stack. It interacts with control and data paths like Open vSwitch and Netfilter, making it invaluable for debugging network issues, exploring the Linux networking stack, or testing network features. Retis offers packet filtering and tracking, retrieving metadata and contextual information beyond the packet itself. No compilation on the target system is required, and post-processing capabilities, such as reconstructing a packet's journey, are included. User-friendly with pre-built profiles and support for custom probes and filters, Retis provides flexibility and ease of use.