External resources

Presentations

• Following a packet journey through the networking stack in OpenShift at Devconf.cz (2025). Slides.
• Challenges and limitations of debugging increasingly complex virtualized networks with Retis at Netdev 0x19 (2025). Slides.
• Tracing packets in OVS: an update on Retis at Open vSwitch and OVN 2024 Fall Conference.
• Tracing packets in the kernel OVS datapath with Retis at Open vSwitch and OVN 2023 Fall Conference. Slides.
• Tracing the Linux networking stack with Retis at Devconf.cz 2023. Slides.

Blog articles

• Filtering packets from anywhere in the networking stack describes the filtering concepts adopted by Retis, the associated expectations and interactions.
• Dumping packets from anywhere in the networking stack shows how to use the pcap sub-command to inspect packets at post-processing time with external tools, such as tcpdump and wireshark.
• An update on packet drop reasons in Linux describes how to use Retis for packet drops inspection.