I'm trying to add an ap521 to my wireless lan controller. I can ping the dns name of the controller from the ap, cisco-lwapp-controller, and see the log messages when booting the ap that it can resolve the name. When I run debug lwapp client packet it returns a message "Received discovery Response from mwar 68e4bdc48940", which is the mac of the wan router at the remote location where the AP is. The WLC sees the AP, and its correct MAC and IP address, but shows it as not joined.
Base Mac AP EthernetMac AP Name IP Address Status
00:26:cb:c5:d6:40 N A AP1-Wired 0.0.0.0 Joined
00:27:0d:30:2e:50 N A AP3-3029C 0.0.0.0 Joined
00:27:0d:30:33:40 N A AP1-DC 0.0.0.0 Joined
00:27:0d:30:36:80 N A AP2-2/48 0.0.0.0 Joined
54:75:d0:dc:9c:94 N A N A 172.21.28.149 Not joined
I've tried adding it manually from the AP and reloaded it several times. Am running version 6 on my wlc.