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I have a Belkin Router and accidentally changed the MAC Address for the Wireless Area Network. Is there a way to retrieve previous inputted MAC Address using Terminal?

I'm looking around system and network logs but I can't find previous records of MAC Address for my WiFi network.

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    Which MAC address did you change and where? – dan Jan 2 '14 at 9:25
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    If you would like your question to be of a great help to others, I advise you to make clearer which MAC address you changed (there are many MAC involved in the simplest network with a router and a Mac). – dan Jan 2 '14 at 15:52
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The information should be printed on a label located on your router. Find the one that corresponds to your wireless networking (LAN/WLAN). If you can't find it, you can follow the instructions here to reset your router to factory defaults:

Method 1:

1. Type http://192.168.2.1 in your browser, then restore factory defaults

Method 2:

2. Hold the `Reset` button on the back/bottom/side of the unit pressed
   for 10+ seconds, while the unit is powered on

Belkin Router Sticker

belkin reset instructions here

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I think by restarting your machine its MAC address will restore to its original value. If not you can get your hardcoded MAC address by executing this command in the terminal:

networksetup -getmacaddress [your network interface, e.g. en1]

  • This command, as the standard ifconfig en1, will display the actual MAC address. – dan Jan 2 '14 at 9:58

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