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Using mac80211_hwsim can sometimes result in out of order messages coming from the kernel. Since mac80211_hwsim immediately sends out frames and the kernel keeps command responses in a separate queue, bad scheduling can result in these messages being out of order. In some cases we receive Auth/Assoc frames before the response to our original CMD_CONNECT. This causes autotests to fail randomly, some more often than others. To fix this we can introduce a small delay into hwsim. Just a 1ms delay makes the random failures disappear in the tests. This delay is also makes hwsim more realistic since actual hardware will always introduce some kind of delay when sending or receiving frames.