I've installed four WLC 220.127.116.11 and the clients have roaming issues. When a client roams i can see it as "Mobility Role: Anchor" on the first WLC it connected and as "Mobility Role: Foreign" on the WLC it roamed to. The problem is after the roaming the client can't reach the network, no ping, no communication. I can ping the client from the controller it roamed to, but not from the first controller it connected (the anchor). Mobility groups are configured correctly, "Symmetric mobility tunneling mode" and "AP Groups VLAN Feature Enable" are disabled. I've configured all the controllers as DHCP with different scopes on the same subnet, so its a inter-controller roaming, not inter-subnet. I can't upgrade the controller software soon because its a production environment. To fix the problem I remove the client from the first controller, refresh its Wifi interface so it connects directly to the second controller and the network works again. Any help is welcome. Thank you.