Problem in 4-Way Handshake

[Jack Yip]

Hi ,
I am porting the supplicant to my device to communicate with a CISCO server through EAP-FAST.
I am now in the final state, but I have problem on the 4-way handshake.
After I have sent the msg 2/4, I found that somehow the program back to the msg 1/4.

And I have diff the msg of the windows version, I found that in the msg 2/4,

windows version has 26 byte:
WPA: WPA IE for msg 2/4 - hexdump(len=26): dd 18 00 50 f2 01 01 00 00 50 f2 02 01 00 00 50 f2 02 01 00 00 50 f2 01 3c 00

but in my debug msg, I got 24 bytes:
WPA: WPA IE for msg 2/4 - hexdump(len=24): dd 16 00 50 f2 01 01 00 00 50 f2 02 0
1 00 00 50 f2 02 01 00 00 50 f2 01

I think this is abnormal, but do you know where goes wrong? Or which function can I look into it?

Many thanks!!

Jack
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