Why EAPOL packet are sended but never received.

Jouni Malinen j at w1.fi
Wed May 7 05:22:30 EDT 2008

On Fri, May 02, 2008 at 05:18:21PM +0800, 娟 严 wrote:

>       My problem is:
>       EAPOL packet are sended but never received. Switch:Cisco Catalyst 2950 series; PC/os: linux
> plus: When I use windows XP to authentication, the switch will  response normally.

Which version of wpa_supplicant are you using? Which network card and
driver are you using?

The EAPOL frame from the wired authenticator would be a multicast packet
and wpa_supplicant subscribes for that multicast group. It sounds like
something fails to deliver the frame to wpa_supplicant in this
particular case. Could you please test whether setting the interface
manually into promiscuous mode ("ifconfig eth0 promisc") would help? It
would also be interesting to see whether a packet sniffer (e.g.,
Wireshark or tcpdump) seems the EAPOL frame on the client.

Jouni Malinen                                            PGP id EFC895FA

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