After the random MAC address, we all expected the next level of escalation in the "tracking war". This comes in form of the APs being able to track clients using their sequence numbers and to some extent HT/VHT information which tends to be pretty unique, as evidenced by the fingerprinting the Google Fiber folks did. Extend scan privacy by adding two new flags: * random SN this randomizes the sequence number of the probe request frames transmitted * minimal content reduces the probe request content to just the SSID, supported rates, DS element and - if given - requested elements from userspace johannes
