Radio actually connects to AP and when PPPoE fails (account is off, username password wrong, whatever) the radio disconnects with the above reason. This is a new behavior that only started when radios/AP were upgraded from 4.6.1 to 4.8 a few days ago. From the AP’s side it just sees the client connect then drop without explanation.
Looking around for new settings to possibly turn this behavior off but have not found it if it exists.
So far only upgraded a couple of micropops and they are all AC AP/Clients so not sure if this also happens with N radios.
Forgot, Radios configure to NAT - PPPoE auto - TDD - Separate Management Interface and do NAT/DHCP on the customer interface.