Feisty Duck's resource offers insights, tutorials, and resources for cybersecurity professionals and enthusiasts. Readers can learn about cybersecurity threats, defensive strategies, and security best practices. With articles, tutorials, and case studies, Feisty Duck provides  guidance and expertise for securing systems and networks against cyber threats.

IPng Networks

A deep technical exploration of SRv6 (Segment Routing for IPv6) implemented in VPP (Vector Packet Processor). Covers SRv6 fundamentals including the Segment Routing Header structure, SR Policies, Source/Transit/Endpoint nodes, and practical L2VPN configuration. The author extends VPP to support SRv6 encap/decap on sub-interfaces (not just physical interfaces), discovers and fixes a quad-loop bug in `sr_policy_rewrite_encaps_l2()` that caused ~75% packet loss when segment lists had length 1, and adds unit tests for PHY and sub-interface encap/decap scenarios. The change (~850 LOC) is submitted for upstream review on fd.io Gerrit.

VPP: Adding SRv6 encap/decap on sub-interface