Can one STA with EAPOL errors make hostapd drop all clients?

Rafał Miłecki zajec5
Sun May 24 22:18:24 PDT 2015


I'm experimenting with various drivers and during my tests I got a
faulty STA. It experiences some Michael failures which causes
wpa_supplicant sending EAPOL errors to AP.

What bothers me is that hostapd drops all STAs after getting the
second "EAPOL-Key Error Request". Instead of just dealing with faulty
STA it breaks connectivity for all other users. Moreover they can't
re-connect for some reason until I disable faulty STA and wait few

I verified this faulty STA can affect hostapd like this when using:
1) Broadcom hw and hostapd-2014-06-03
2) Broadcom hw and hostapd-2015-03-25
3) Atheros hw and hostapd-2012-04-28

Could you take a look at this? Attached is a log in HTML form for
better comparison of hostapd and wpa_supplicant parts.

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