# RouterOS Pitfalls
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# Zdenek Styblik
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# 10/Jan/03 @ initial version
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Here are some pitfalls you might encounter with RouterOS. 
Well, right now, I have no vision how this document should be 
organized nor if it's propriate. We'll see how it turns out.

# WPA/WPA2 and compression
It simply doesn't work in RouterOS 4.x, at least not in 4.0 and 4.4.
I've tested it with ROS4.0 against ROS4.4. I've tried various 
combinations - AP bridge, station, station pseudobridge - nothing 
(Note: I'm not interested into WDS).
All you get is that group key timed-out, unicast key timed out, 
connection failed reason unknown - all intuitive messages 
pin-pointing where is the problem.
So, if you want WPA/WPA2 don't turn-on compression at STA side.
Somewhat after-thought, it's probably understandable why it doesn't 
work, yet does it struck you in the field when everything else 
works, but this? No :) And by everything I mean connections MT-Linux.