Upgraded a RB600 to 4.16, and replaced an Alfa card with a r52hn with new pigtails all round, clients have good signal to the new card, but pppoe sessions don't seem complete or last long if they authenticate, completely reset the the card twice and re-setup from scratch, still same problem, Put back the old Alfa card and problem persists there are 2 other cards aswell also with pppoe server on them which work 100%, I am starting to think it might be the sector. Any suggestions ?