Can't receive VLAN tagged multicast message

Hey all,

i have the following setup:

Device A <-eth-> Router(GL-SFT1200) <-eth-> Device B

Device A sends messages to the multicast subnet from a address, additionally the messages end by Device A also already have a VLAN tag.

The problem is that I can't see the messages sent by Device A on Device B or on the Router with Wireshark.

Any help is appreciated.

Are these different VLANs?

Without special config, multicast only works on the same broadcast domain.

So different VLANs?

Is this relevant to your issue: