[$] Examining other network namespaces using BPF

Jordan Rife's work involves writing BPF programs forCilium that interface withKubernetesnetworking. As part of that work, he wants to enable BPF programs withappropriate permissions to iterate through the sockets of a different networknamespace. He led a session about the idea at the 2026Linux Storage,Filesystem, Memory-Management, and BPF Summit where the BPF developers inattendance were quick to suggest a number of related alternatives.