Upgrade from 2.2.5 to 2.2.6 PPPOE bug ***SOLVED***
I have upgraded my box from 2.2.5 to 2.2.6 and it seems the PPPOE is broken (WAN interface).
The v2.2.5 version is worked flawlessly.
The problem is very similar to this thread:
I will post some log file later.
It most definitely isn't related to the thread you linked if it worked in 2.2.5. There were no PPP-related changes at all between 2.2.5 and 2.2.6, so it's extremely unlikely it has anything to do with the upgrade. More likely if it started immediately post-upgrade, it was triggered by the reboot post-upgrade, not the upgrade itself.
PPP logs would be the place to start.
It is solved.
The problem was the ISP device.
It was just a coincidence, after the upgrade didn't worked.