Design Idea (1/2)
In order to reuse the AAA architecture and avoid
the influence to the station (ASUE), the EAP packet
SHOULD be exchanged between the AE and the
AAA  server. 
As AAA server's peer is station (ASUE), the WLAN
Device (AE) SHOULD mimic itself as a peer (ASUE). 
By this way, from the AAA server perspective,
EAP-WAI is similar to the other authentication methods