I recently downloaded the update 2.9.21 for RB532 and upgraded. All seemed to come back well except that all E-oIP interfaces for some reason reset and lost all configs. I tried to reconfigure them, but it giving the error Invalid MAC Address. I then downgraded to 2.9.20 and that was the worst, I couldnt get steady pings to the RB thru ether1. I managed to get into the unit and restore and earlier backup and all came back to norm.
I havent tried upgrading again to 2.9.21. Was wondering if anyone has seen either of this problem with 2.9.20 or 2.9.21?