Cisco Wireless :: 1552 MAP Can't Join Network Through RAP

I have configured a 1552, that is wired to network, as "Bridge" then "RootAP".
 
After reboot, I can see a MAP trying to join the network, in the "simple" logs of the controller :
"Mon May 6 17:29:43 2013   Mesh Node '04:da:d2:1f:4d:6f' failed to join controller, MAC address not in MAC filter list."
 
As I have done for the RAP, I enter this MAC address in the MAC Filtering area under Security tab. But this action doesn't solve the problem, I continue to see this message in the controller logs !
 
If I open a SSH session on the RAP, I can see this block of debug messages repeat all the time :
*May  6 15:29:33.163: %MESH-6-ADJ_VIDB_LINK: Mesh neighbor 04da.d21f.4d6f VIDB Virtual-Dot11Radio0 dot1x control
*May  6 15:29:33.167: %LINK-6-UPDOWN: Interface Virtual-Dot11Radio0, changed state to up
*May  6 15:29:34.167: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Dot11Radio0, changed state to up
*May  6 15:29:43.223: %MESH-6-LINK_UPDOWN: Mesh station 04da.d21f.4d6f link Down
*May  6 15:29:43.423: %MESH-6-ADJ_VIDB_LINK: Mesh neighbor 04da.d21f.4d6f VIDB Virtual-Dot11Radio0 going
 
When I take a look into detailled debug messages of the controller I can see this :
*spamReceiveTask: May 06 17:30:44.364: #LWAPP-6-RADIUS_AUTHORIZATION: spam_radius.c:242 The system could not send join reply, AP authorization failed; AP:04:da:d2:1f:4d:6f
 
I don't know why the system talks about dot1x or Radius Authorization, and if this is the source of my problems. On a other hand, I can see in the debug messages that there is a 2 hours lag time between controller (correct time) and RAP (incorrect, I suppose it synchronize with the controller?)