Yes, this is a bug and Mikrotik is fixing it in one of the coming releases.
It is also discussed here: http://forum.mikrotik.com/t/issue-with-rb5009-ros-v7-1rc1-dhcpv6-pd-over-pppoe-on-tagged-ethernet-link/151407/1
Yes, this is a bug and Mikrotik is fixing it in one of the coming releases.
It is also discussed here: http://forum.mikrotik.com/t/issue-with-rb5009-ros-v7-1rc1-dhcpv6-pd-over-pppoe-on-tagged-ethernet-link/151407/1