unregister_pernet_device(9)

✨ NAME ✨

unregister_pernet_device — the little function that unregisters a network namespace netdevice 🎀 (yes that's the whole vibe, this is the unregister_pernet_device(9) page from the Kernel API Manual, hi bestie 💖)

🌸 SYNOPSIS 🌸

void unregister_pernet_device (struct pernet_operations *ops );

🦋 ARGUMENTS 🦋

• ops — the pernet operations structure you're manipulating 🫶 that's it, that's the whole argument, she's simple and iconic

👑 DESCRIPTION 👑

Okay so here's the tea ☕ — this function removes the pernet operations structure from the list that gets used whenever network namespaces are created or destroyed. Literally taking it off the guest list 💅

And bestie, that's not all: in addition it runs the exit method for all existing network namespaces 🔥 so like, not just the future ones — the ones already at the party get the exit method run on them too. No cap.

Heads up babes — the description literally says "in addition," so both things happen: the structure comes off the list, and the exit method runs for every existing network namespace. Don't skip the second part, that's the main character energy right there 😭 ✨

💜 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)
• unregister_pernet_subsys(9)
• register_pernet_device(9)

Go read those too, iykyk 🌈✨

And that's the whole page, bestie 🍓 this lil gem lives in ./net/core and the version/date stamp is October 2026 — so mark your calendar, mwah 💋 🧚💜