Hi @all,
I haven’t found a bug tracker so I will write the bug right here.
I had some double with tagged Ethernet packets from a DSLAM. I traced at the DSLAM and the packets hat 2 VLAN Tags with the same VID. When I looked at the MikroTik it dropped both Tags instead of only one. From my exp. it should only drop one.
Is this a bug or a feature? 
greetings