If you ever need another mac address do the following in Terminal.app, which is located in /Applications/Utilities :

10.5 / Leopard:

sudo ifconfig en0 lladdr 00:00:00:00:00:00


10.4 / Tiger:

sudo ifconfig en0 ether 00:00:00:00:00:00

Edit:

A static method can be found here (thanks to MMM)

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7 Responses to “Mac ::: MAC-Address spoofing on Mac OS X”
  1. Just a precision : this will work for mac wireless address but not for mac wired adress on Leopard!

  2. hi shams,

    thanks for the response.
    Actually i have just tried that again with both ethernet interfaces on my mac pro.
    I am curious:
    what happends while you were trying that ?

    I was able to change both devices to a new value and re-changing them back to the old values.

    Greetings
    fidel

  3. Me too, was unable to change MAC address of wired iface (MacOs X 10.5.2)
    ifconfig command execs successfuly, although mac is not changed.
    Lots of ppl have this problem, it seems there’s no workaround
    at this moment.

  4. mh, guess gonna re-test with another mac tomorrow.
    worked like a charme for my mac pro…lets see how the 2 mobile macs act :D

  5. Spoofing the MAC address on Airport Extreme cards (dynamic method)

    http://www.suspekt.org/

  6. Spoofing the MAC address on Airport Extreme cards (static method)

    http://www.suspekt.org/airport-static.html

  7. thank you very much MMM.
    gonna add this information.

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