dev_uc_del(9)

💅 dev_uc_del ✨

okay so you're in the Kernel API Manual bestie, and today's main character is dev_uc_del(9) 🎀

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🌸 NAME 🌸

dev_uc_del — release a secondary unicast address. that's it, that's the whole vibe 💖

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✨ SYNOPSIS ✨

int dev_uc_del (struct net_device *dev , const unsigned char *addr );

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🦋 ARGUMENTS 🦋

• dev — the device, the whole entire device 👑
• addr — the address you're deleting, say bye bestie 🫶

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💜 DESCRIPTION 💜

so what this does is: it releases the reference to a secondary unicast address, and then it removes that address from the device if the reference count drops to zero. that's the condition, periodt — refcount hits zero, it gets yeeted. not before. 😭

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🌈 SEE ALSO 🌈

no cap there is a LOT of family here, so let's get into it — all of these live in the kernel file ./net/core/dev_addr_lists.c:

• __hw_addr_sync_dev(9)
• __hw_addr_ref_sync_dev(9)
• __hw_addr_ref_unsync_dev(9)
• __hw_addr_unsync_dev(9)
• __hw_addr_list_snapshot(9)
• __hw_addr_list_reconcile(9)
• dev_addr_flush(9)
• dev_addr_init(9)
• dev_addr_add(9)
• dev_addr_del(9)
• dev_uc_add_excl(9)
• dev_uc_add(9)
• dev_uc_sync(9)
• dev_uc_sync_multiple(9)
• dev_uc_unsync(9)
• dev_uc_flush(9)
• dev_uc_init(9)
• dev_mc_add_excl(9)
• dev_mc_add(9)
• dev_mc_add_global(9)
• dev_mc_del(9)
• dev_mc_del_global(9)
• dev_mc_sync(9)
• dev_mc_sync_multiple(9)
• dev_mc_unsync(9)
• dev_mc_flush(9)
• dev_mc_init(9)
• netif_uc_promisc_update(9)
• __dev_set_rx_mode(9)
• netif_rx_mode_sync(9)

the way that list ate and left no crumbs 🔥

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💀 friendly reminder that this was brought to you from the ./net/core hive, dated October 2026, and yes the page is literally named dev_uc_del(9) — slay, stan, sync responsibly bestie 🌸✨💅