Hi,
I'm running hostapd on a Raspberry Pi 2 B+ on Raspbian 8, installed from
the default apt repo.
Most of the time the wifi works perfectly. The first day things went
pretty swell, but I was getting `deauthenticated due to local deauth
request` pretty consistently. I tried [installing havege][1], because
`/proc/sys/kernel/random/entropy_avail` had < 500, but that didn't really
seem to have an effect (aside from keeping my entropy_avail > 1000). Then
I learned that TKIP was not very secure, so I changed my config to use
CCMP. Yet I still get fairly frequent disassociation problems, like so:
Nov 25 05:20:23 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 IEEE
802.11: associated
Nov 25 05:20:23 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
event 1 notification
Nov 25 05:20:23 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
start authentication
Nov 25 05:20:23 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 IEEE
802.1X: unauthorizing port
Nov 25 05:20:23 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
sending 1/4 msg of 4-Way Handshake
Nov 25 05:20:23 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
EAPOL-Key timeout
Nov 25 05:20:23 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
sending 1/4 msg of 4-Way Handshake
Nov 25 05:20:24 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
EAPOL-Key timeout
Nov 25 05:20:24 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
sending 1/4 msg of 4-Way Handshake
Nov 25 05:20:25 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
EAPOL-Key timeout
Nov 25 05:20:25 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
sending 1/4 msg of 4-Way Handshake
Nov 25 05:20:26 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
EAPOL-Key timeout
Nov 25 05:20:26 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
PTKSTART: Retry limit 4 reached
Nov 25 05:20:26 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
event 3 notification
Nov 25 05:20:26 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 IEEE
802.1X: unauthorizing port
Nov 25 05:20:26 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 MLME:
MLME-DEAUTHENTICATE.indication(cc:6d:a0:2c:00:b1, 2)
Nov 25 05:20:26 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 MLME:
MLME-DELETEKEYS.request(cc:6d:a0:2c:00:b1)
Nov 25 05:20:31 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 IEEE
802.11: deauthenticated due to local deauth request
Nov 25 05:20:35 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 IEEE
802.11: disassociated
Nov 25 05:20:38 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 IEEE
802.11: associated
Nov 25 05:20:38 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
event 1 notification
Nov 25 05:20:38 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
start authentication
Nov 25 05:20:38 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 IEEE
802.1X: unauthorizing port
Nov 25 05:20:38 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
sending 1/4 msg of 4-Way Handshake
Nov 25 05:20:38 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
EAPOL-Key timeout
Nov 25 05:20:38 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
sending 1/4 msg of 4-Way Handshake
Nov 25 05:20:39 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
EAPOL-Key timeout
Nov 25 05:20:39 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
sending 1/4 msg of 4-Way Handshake
Nov 25 05:20:40 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
EAPOL-Key timeout
Nov 25 05:20:40 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
sending 1/4 msg of 4-Way Handshake
Nov 25 05:20:41 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
EAPOL-Key timeout
Nov 25 05:20:41 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
PTKSTART: Retry limit 4 reached
Nov 25 05:20:41 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 WPA:
event 3 notification
Nov 25 05:20:41 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 IEEE
802.1X: unauthorizing port
Nov 25 05:20:41 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 MLME:
MLME-DEAUTHENTICATE.indication(cc:6d:a0:2c:00:b1, 2)
Nov 25 05:20:41 raspberrypi hostapd: wlan0: STA cc:6d:a0:2c:00:b1 MLME:
MLME-DELETEKEYS.request(cc:6d:a0:2c:00:b1)
Typically it resolves itself after 3-5 minutes, but then the issue will
resurface some time later - maybe 30-60 minutes.
My hostapd.conf looks like this:
# hostapd.conf
interface=wlan0
ssid=myssid
channel=1
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=3
wpa_passphrase=mysecretpassphrase
wpa_key_mgmt=WPA-PSK
wpa_pairwise=CCMP
rsn_pairwise=CCMP
logger_syslog_level=1
driver=nl80211
ieee80211n=1
hw_mode=g
device_name=RTL8192CU
manufacturer=Realtek
ap_max_inactivity=1000
disassoc_low_ack=0
#####
Another interesting fact - when I restart hostapd then the wifi is usually
just fine for at least a few minutes (maybe tens of minutes).
I've been searching Google for several days, but I haven't really been
able to identify what's actually causing my issue (just a bunch of people
who seem to have similar issues, though in most cases they can't connect
at all).
Any clue what I could do to figure out the root cause of my problem?
Thanks!
Wayne
[1]: http://stackoverflow.com/a/38173266/344286
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