I get this error when running airmon-ng on my Oracle VM. Not really sure why it's happening I'm fully updated and upgraded. When I try to run the command airmon-ng eth0 start it just gives me that message. Does someone know how to fix this?


Well, you see, eth0 is an "cable" interface, generally speaking. You have to follow a procedure, which looks like that:

airmon-ng       ### Shows the available wireless interfaces.
airmon-ng start wlan0  ### Start a monitoring interface, usually named mon0     
airodump-ng mon0    ### Just observing the available wireless networks
  • go to http://linuxwireless.org/download/compat-wireless-2.6/
  • download the file "compat-wireless-2010-10-26-p.tar.bz2"
  • now extract it with "tar -jxvf compat-wireless-2010-10-26-p.tar.bz2"
  • go inside the folder with "cd (name of folder)"
  • type "make unload"
  • type "make load"
  • Problem Solved ! :)

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