Sometimes some of EAP650 clients after connecting to the AP get an IP address but can't access (no ping) nothing from the local netwrok (EAP650 itself, OC200, router, etc.). It happens with different clients (MacBook, Windows Laptop, Phones) and it doesn't depend on the number of currently connected devices (It can happen when only 2 devices are connected or when they're more then 5). The only way to resolve it right now is to restart the AP (sometimes I have to do it several times until all devices can connect and have access). After that it works fine for about a day before it happens again.