unregister_pernet_subsys(9)

🎀 NAME 🎀

unregister_pernet_subsys — unregister a network namespace subsystem. This is the Kernel API Manual page for it, bestie, and it's giving “cleanup era” energy 💅✨.

✨ SYNOPSIS ✨

void unregister_pernet_subsys (struct pernet_operations *ops );

🌸 ARGUMENTS 🌸

• ops — the pernet operations structure to manipulate. That's it, that's the argument, no cap 🫶.

💖 DESCRIPTION 💖

Okay so here's the tea: unregister_pernet_subsys removes the pernet operations structure from the list that's used when network namespaces are created or destroyed. Literally removes it from the list, periodt ✨.

In addition — because it's an overachiever — it runs the exit method for all existing network namespaces. All of them, bestie 😭👑

Lowkey important detail: the removal-from-the-list part and the run-the-exit-method-for-all-existing-network-namespaces part are both in the description. Keep both in your brain, iykyk 🧚💜.

🦋 SEE ALSO 🦋

• Kernel file ./net/core/net_namespace.c
• net_ns_get_ownership(9)
• net_ns_barrier(9)
• get_net_ns(9)
• register_pernet_subsys(9)
• register_pernet_device(9)
• unregister_pernet_device(9)

💌 kiss kiss, source/version ./net/core, dated October 2026 — unregister_pernet_subsys(9) out! 🫶🎀