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thesauri/change-mac-address-sequoia.md

Last active July 26, 2025 22:13
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Change MAC address macOS 12 Monterey
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change-mac-address-sequoia.md

Change MAC address in macOS Sequoia

I was unable to change the MAC address of the Wi-FI device on a MacBook Air (M1 2020) running macOS Sequoia due to the following error: ifconfig: ioctl (SIOCAIFADDR): Can't assign requested addres.

By running the commands in following sequence I was able to change it successfully:

  1. Turn WiFi device off
  2. Turn the WiFi device on again: networksetup -setairportpower en0 on
  3. Change the MAC: ifconfig en0 ether <mac-address-here>
  4. Run: networksetup -detectnewhardware
@mbierman
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@johan13 Thank you. That works for Wi-Fi, but not for Ethernet unfortunately. Still better than nothing though.

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