There is a vlan bug in version 6.6. Revert to 6.5 until they release 6.7 as stated by MT support in post:
http://forum.mikrotik.com/t/queues-for-a-whole-ip-class/66/1
There is a vlan bug in version 6.6. Revert to 6.5 until they release 6.7 as stated by MT support in post:
http://forum.mikrotik.com/t/queues-for-a-whole-ip-class/66/1