we're expecting some pppoe issues in this scenario:
AP: epmp3k fw 4.5 with smartpanel
CPE: force200 with fw 4.5 bridge mode
Router: Cisco 800 series with PPPOE client tagged interface
With firmware 4.3 no issues. With firmware 4.5 pppoe always disconnect.(pppoe restarting)
With force 300 and firmware 4.5 no problems.
Please check this bug.