First of all I want to make clear that I am speaking of VLAN over PPPoE, not VLAN to be used for PPPoE, i.e. I am speaking here of VLANs once the PPPoE/PPP connection is up and running. So I do not attempt to open several PPPoE connections over separate VLANs, but use one single PPPoE which encapsulates several VLANs
I do have the PPPoE server connected to ether1 and configured pppoe-internet interface for pppoe. In the following I speak about packets comming in from the ISP (or out to the ISP) through the pppoe-internet interface.
My ISP offers different services internet, voip and ipTV with each having its own VLAN. Currently I have not been able to setup VLAN on the MikroTik router (RB3011) for the ppoe-internet interface thus using the default VLAN which makes the internet work at least.
All attempts to separate the VLANs from the PPPoE interface failed so far. I.e. creating a VLAN interface fails because the pppoe-internet is not selectable as Interface for a VLAN interface. The second idea was to separate the VLAN in a bridge by creating VLAN interfaces for the bridge but this fails as I cannot connect pppoe-internet interface to a bridge.