is_multicast_ether_addr(9)

📦 version 7.3.1, in nixpkgs unstable

💅 is_multicast_ether_addr(9) — Kernel API Manual 🦋

okay so bestie, welcome to the Kernel API Manual, and today's main character is is_multicast_ether_addr(9). yes it's a function name that's literally the whole vibe check. let's get into it ✨

🌸 NAME 🌸

is_multicast_ether_addr — Determines if the Ethernet address is a multicast. that's it, that's the job, and it does it flawlessly 💅

✨ SYNOPSIS ✨

bool is_multicast_ether_addr (const u8 *addr );

look at her. returns a bool, takes a const u8 *, no drama, no cap 🫶

🎀 ARGUMENTS 🎀

  • addr — Pointer to a six-byte array containing the Ethernet address. six bytes, bestie, not five, not seven — six. it's giving very specific and honestly? iconic 🦋

👑 RETURN 👑

true if the address is a multicast address. and here's the little plot twist: by definition the broadcast address is also a multicast address. so if you were out here thinking broadcast was in its own separate lane... nope, she's part of the multicast friend group too 💀 periodt.

🌈 SEE ALSO 🌈

Kernel file ./include/linux/etherdevice.h, and honestly the whole etherdevice extended universe — she's got so many sisters, let me introduce you 🧚:

like, that's a whole friend group and every single one of them is serving 🍓

ngl this is genuinely one of the nicest little predicate functions in the kernel — one argument, one bool, zero chaos. lowkey obsessed 🔥

okay that's the whole page bestie, no notes 💜 this was brought to you by ./include/linux, dated October 2026 — catch you in the next manpage, mwah 🎀🫶

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