pppoe MTU 1500

hi, I approached recently cambim the world, and are being tested for a PMP, but I did notice, however, 'that I can not use the cpe integrated with the PPPoE MTU 1500, I very much regret this because my network currently works with all MTU pppoe to 1500, I’m not going to back down dinuovo 1492, I now use microtik and supports 1500 MTU, I do not know if I will continue 'with cambium arrived I point, it seems strange that cambium still has not implemented MTU pppoe 1500, would be very welcome to me.

We have the same problem as the colleague above, since the MTU limit in 1492 does not meet RFC4638.