For pyrit 0.5.1 functionality and compatibility the newer releases of scapy 2.4+ seem to have compatibility issues. Here is the scapy 2.3.2 extension and pycrypto .dep SourceForge: scapy-2.3.2.tcz pycrypto-2.6.1.tcz BitBucket: scapy-2.3.2.tcz pycrypto-2.6.1.tcz For installation: 1.) Download both *.tcz extensions from either repository above. 2.) Copy both *.tcz extensions to your (*/tce/optional/) directory. 3.) Make the following changes to your onboot.lst file located in your (*/tce/) directory. - Remove previous scapy line item(s). - Add "scapy-2.3.2.tcz" to your onboot.lst - Add "pycrypto-2.6.1.tcz" to your onboot.lst - Make sure to add one extra empty line at the bottom of your onboot.lst 4.) Save the changes you made to your onboot.lst and close. 5.) Reboot your system and pyrit will be fully functional.