Hi freeradiusers,
    In purpose to implementing eap-sim supplicant i created the following virtual infrastructure :
  
        supplicant -------------------------- NAS (Access Point)   --------------------------------------------- freeradius server
         10.0.0.1           Ethernet              10.0.0.2                                   UDP                     195.12.16.17

supplicant :: is my real computer
NAS:: is a vmplayer virtual machien
and freeradius server: is lxc container (virtual machine too)

i have to test communications between supplicant <-> NAS and then between NAS <-> server
thanks to eapol_test i can know test udp communications between NAS and server (thank you matthew your answer was very apreciated)
and know i have to test (simulate, understand )802.1x eap communication between supplicant and nas, i can't find a way to simulate a NAS (Point ACCESS) with 802.1x supplicant thant can controle ethernet and not wireless access from supplicant, because i use linux bridge to connect my virtuel machines to each others (so no wireless or can we simulate wireless connexion too ?)
clarification on this point will be very appreciated !

Thanks in advance