EAPOL Key Timeout 1/4

Thu Oct 22 04:50:02 PDT 2009

Forgot to add that i get this misbehaviour on hostapd unstable git
version and on the current stable 0.6.9 version.

Am Donnerstag, den 22.10.2009, 13:39 +0200 schrieb Marc - A. Dahlhaus
[ Administration | Westermann GmbH ]:
> Hello Daniel,
> 
> Am Mittwoch, den 21.10.2009, 09:01 +0200 schrieb Daniel R?nnqvist:
> > Hi again,
> > 
> > when running hostapd (nl80211/bcm4306 on a ppc mac) with kernel 2.6.30
> > it works kind of ok. One of my two laptops at home can connect and
> > that's the one usually having better connection to any AP (stronger
> > signal). The other one can connect but will get disconnected after a
> > few minutes. Both are WinXP.
> > 
> > When running with kernel 2.6.31 it wont work at all, the EAPOL keys
> > are only rarely seen going out on wlan0 when I use tshark. If they go
> > out they are answered by the client (verified with wireshark on
> > client) but the response is never seen on the AP side. This was my
> > problem when I first posted this issue.
> 
> i have the exact same problems with rt61pci (rt2x00) on i386 arch (32bit
> PAE) and another user of rt61pci hit that problem also [1]. I've tested
> 2.6.31.x and 2.6.32-rc4 kernels with no positive result. On kernels <
> 2.6.31 it works like a charm. I couldn't bisect it because i'm not that
> familiar with git as of now.
> 
> It looks pretty much like a regression in the 2.6.31 development time
> frame in mac80211 or cfg80211 on kernel side IMO if more than one driver
> is actually affected by this misbehaviour.
> 
> If there is anything i can help with debugging on this problem, please
> guide me.
> 
> Marc
> 
> 1: http://rt2x00.serialmonkey.com/phpBB/viewtopic.php?f=5&t=5712
> 
> > With and 2.6.32-rc I get kernel scheduler errors in my dmesg and soon
> > after starting to send traffic over the wlan the machine crashes, it's
> > an RC after all.
> > 
> > So going back to 2.6.30 kind of solves my problem, except for one of
> > my XP machines but I can't really blame hostapd for that, can I? ;)
> > 
> > Just thought I would let you know if there's anyone having the same problem.
> > 
> > BR,
> > Daniel
> > 
> > 
> > 
> > Den 15 oktober 2009 11.18 skrev Daniel R?nnqvist <kdronnqvist at gmail.com>:
> > > 2009/10/14 Jouni Malinen <j at w1.fi>:
> > >> On Wed, Oct 14, 2009 at 09:11:00AM +0200, Daniel R?nnqvist wrote:
> > >>
> > >>> * Is hostapd from git supposed to work with nl80211 (with a bcm4306 rev3)?
> > >>
> > >> I don't know about bcm4306, but at least the current snapshot of hostapd
> > >> seems to be working fine with the ath9k driver.
> > >>
> > >>> * What does "deauthenticated due to local death" mean?
> > >>
> > >> It means that hostapd requested a station to be deauthenticated (in this
> > >> case, I would assume it happened due to the WPA 4-way handshake timing
> > >> out).
> > >>
> > >>> * The only messages i see with tshark during the authentication
> > >>> process is "EAPOL Key" and some "LLC" messages coming from the client
> > >>> MAC. The hostapd log says EAPOL Key Timeout on handshake 1/4. Is this
> > >>> enough to guess what ballpark my problem is in?
> > >>
> > >> Have you verified that your client is receiving the EAPOL-Key message
> > >> 1/4 and replying with 2/4?
> > >>
> > >> --
> > >> Jouni Malinen                                            PGP id EFC895FA
> > >
> > > I see EAPOL key coming in on the client and it is answering to the
> > > correct MAC address, but the AP is always just saying EAPOL key
> > > timeout on 1/4. On the AP side i do "tshark -i wlan0" and see the
> > > EAPOL key going out but nothing is coming back. However, I am reading
> > > up on the subject because as of now I must admit that I do not know
> > > how this works. I should be able to give a better description of my
> > > problem in a week or so (after becoming junior guru of wifi) :) I did
> > > get this setup to work before but after upgrading to Debian testing it
> > > just wont.
> > >
> > > BR,
> > > Daniel
> > >
> 
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