Why? - prolaw1

According to developer's site -
Application to spoof your Ethernet or Airport mac address. It will also generate a random address for you. Admin password required to change mac addresses. Just copy to your applications folder to install.

Limitations
-only works for the primary ethernet address
-does not work with Mac Pro airport

Released under GPL. The scripts used to get and set the mac address, for both the Airport and Ethernet interfaces, were modified from one written by Fouad Sethna.

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Sunday, October 21 2007 @ 07:39 AM PDT

Why? - matthk

It spoofs your MAC address, NOT your IP address, so that, for instance, if you've exceeded your download limit at the local internet cafe, (or at work) or you've been banned, you can get back online (as generally, ADMINS block MAC addresses, not IPs) And yes, of course it disconnects you from the net, as it's changed your MAC address and you therfore need to reconnect with your NEW MAC address to remain 'icognito'! :-)

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Tuesday, November 03 2009 @ 06:19 PM PST