On Sun, Mar 31, 2019 at 06:53:29PM -0700, Nils Nieuwejaar wrote: > I'm trying to debug an EAP hostapd problem. I'm using one hostapd instance > to act as a wireless AP, and a second hostapd instance on the same box as a > Radius server. Both instances are running hostapd 2.7. > > I frequently enter a state where a client is attempting to authenticate, but > gets stuck in an endless loop of CTRL-EVENT-EAP-RETRANSMIT events. Eventually > the client gives up, disconnects, reconnects and enters the loop again. If I > kill the AP hostapd process and restart it with the same config file, the client > will be able to connect. > Below is a merged hostapd/radius log showing the failure. We can see that the > two hostapd instances are successfully communicating with one another > throughout. We can also see that some clients are able to connect even while > one is stuck. We also see that the troubled client is able to connect as soon > as hostapd is restarted. All of this implies that the problem is with some > state about this client, either inside hostapd or the wireless driver, which > gets cleared when hostapd restarts. Or in the station device that has connectivity issues.. Stopping and restarting hostapd ends up sending a broadcast deauthentication notice that may clear such state. > Does this sound familiar? Any suggestions for next steps? I'd take a look at more detailed hostapd debug log from the AP (stdout from hostapd with -ddt on command line) and ideally also a wireless sniffer capture showing what frames are exchanged between the AP and the station that has problems connecting. -- Jouni Malinen PGP id EFC895FA _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap
