is_zero_ether_addr(9)

is_zero_ether_addr(9) 💅

okay so welcome to the Kernel API Manual, bestie. we're looking at is_zero_ether_addr, and it's literally the vibe check for an Ethernet address: all zeros or not? iconic. ✨

NAME 💖

is_zero_ether_addr — tells you whether the Ethernet address you gave it is all zeros. that's the whole mission, no cap. 🎀

SYNOPSIS 🦋

bool is_zero_ether_addr (const u8 *addr );

ARGUMENTS 🌸

• addr — pointer to a six-byte array containing the Ethernet address. six bytes, bestie. that's the assignment. 💅

RETURN ⭐

true if the address is all zeroes. periodt. 👑

DESCRIPTION 🫶

real talk: addr must be aligned to u16. that's the note. no extra lore, just alignment. 🔥

SEE ALSO 👑

Kernel file ./include/linux/etherdevice.h is the home base, and it's also serving up this whole friend group:

• is_link_local_ether_addr(9)
• is_multicast_ether_addr(9)
• is_local_ether_addr(9)
• is_broadcast_ether_addr(9)
• is_unicast_ether_addr(9)
• is_valid_ether_addr(9)
• eth_proto_is_802_3(9)
• eth_random_addr(9)
• eth_broadcast_addr(9)
• eth_zero_addr(9)
• eth_hw_addr_random(9)
• eth_hw_addr_crc(9)
• ether_addr_copy(9)
• eth_hw_addr_set(9)
• eth_hw_addr_inherit(9)
• ether_addr_equal(9)
• ether_addr_equal_64bits(9)
• ether_addr_equal_unaligned(9)
• ether_addr_equal_masked(9)
• ether_addr_to_u64(9)
• u64_to_ether_addr(9)
• eth_addr_dec(9)
• eth_addr_inc(9)
• eth_addr_add(9)
• is_etherdev_addr(9)
• compare_ether_header(9)
• eth_hw_addr_gen(9)
• eth_skb_pkt_type(9)
• eth_skb_pad(9)

mwah 💋 — sourced from ./include/linux, dated October 2026, page is_zero_ether_addr(9). go be an icon, bestie 🧚