Set a new mac address on startup

1. Open AppleScript Editor and paste the following into a new file.

set newMac to "00:00:00:00:00:00"
set psswrd to "your_password_here"

repeat with counter from 0 to 50
    try
        set currMac to (do shell script "ifconfig en0" & " | grep 'ether '")
        if currMac contains "ether" then
            exit repeat
        end if
    on error
        delay 2
    end try
end repeat

do shell script "ifconfig en0" & " ether " & newMac password psswrd with administrator privileges

2. Replace 00:00:00:00:00:00 and your_password_here with your own MAC address and password.

3. Save the AppleScript in File Format Application and check the Run Only box. Name it something descriptive like “SetMacAdd.” Save it in Applications or somewhere else where you can find it.

4. Open System Preferences and click on Accounts.

5. In Accounts click on the Login Items tab and the use the “+” to add your saved AppleScript to the list of login items.

6. Restart to check if it works.