Recently upgraded our MMs and MCs to 8.3.0.10 after the upgrade the Android devices as well as Ninendo switches were not able to connnect. Nintendo reported DNS issues, it looks like DHCP gets through but not able to connect. We had a case open with TAC for a few hours when we finally decided to just start rebooting controllers one at a time ( a typical fix for Aruba for some reason) after rebooting MCs one at time where clustered everything started working again? anyone else experiencing these types of issues? We also had some controllers without clustering or HA expereincing the same issue that needed to be rebooted so that rules out clustering bugs.