xt_unregiste...ble_pre_exit(9)

okay so bestie, welcome to the xt_unregiste...ble_pre_exit(9) page from the Kernel API Manual — yes, that truncated title is the whole vibe, iykyk 💅

🎀 NAME 🎀

xt_unregister_table_pre_exit — pre-shutdown unregister of a table. yup, that's the entire assignment: pre-shutdown unregister of a table, and it ate. 💖

✨ SYNOPSIS ✨

here's the exact signature, no cap:

void xt_unregister_table_pre_exit (struct net *net , u8 af , const char
       *name );

💅 ARGUMENTS 💅

three args, let's go:

• net — network namespace 🌐
• af — address family (e.g., NFPROTO_IPV4, NFPROTO_IPV6) 🧚
• name — name of the table to unregister 🎀

🌸 DESCRIPTION 🌸

okay so what does it actually do? It unregisters the specified netfilter table from the given network namespace, and it also unregisters the hooks from netfilter core: no new packets will be processed. literally no new packets, bestie 😭🔥

This must be called prior to xt_unregister_table_exit from the pernet .pre_exit callback. After this call, the table is no longer visible to the get/setsockopt path. In case of rmmod, the module exit path must have called xt_unregister_template prior to unregistering pernet ops to prevent re-instantiation of the table. periodt. 💅

See also: xt_unregister_table_exit 👑

🦋 SEE ALSO 🦋

Kernel file ./net/netfilter/x_tables.c plus these iconic little references:

• xt_check_proc_name(9)
• xt_check_entry_offsets(9)
• xt_alloc_entry_offsets(9)
• xt_find_jump_offset(9)
• xt_copy_counters(9)
• xt_unregister_table_exit(9)
• xt_hook_ops_alloc(9)
• xt_percpu_counter_alloc(9)

mwah 💋 this page comes from ./net/netfilter, is dated October 2026, and answers to xt_unregiste...ble_pre_exit(9) — bye bestie, go unregister responsibly 🫶✨