Unexpexted redirects to captive portal instead of RADIUS

[hpbon]

Haven't been working on any HP wifi controller before.

When most users connects to a certain SSID, they are authenticated through a certain RADIUS server.

Some clients gets redirected to the captive portal.

One of the clients (one that unexpectedly gets redirected to the captive portal) is this guy (found on the forwarding table under "Status", "Mobility"):

Port MAC address VSC ID VLAN Authorized Local Aging

Data tunnel 20:C9:D0:E5:0C:E9 2 - Yes No 290310ms

one that works as expected and getting auth. on the RADIUS server is this one

LAN port 90:68:C3:06:9E:D9 4 2 Yes No 62020ms

I guess I can solve this by clearing him from the table... but how? And is this the correct approach?

Regards, Lars.