Add the ability to change Vlan ID in QinQ mode (Selective Vlan).
Selective Q-in-Q consists of selectively adding an S-VLAN tag depending on the C-VLAN.
We have router CRS328-24P-4S and some port in QinQ mode use Bridge ports (https://help.mikrotik.com/docs/spaces/ROS/pages/328068/Bridging+and+Switching#BridgingandSwitching-VLANTunneling(QinQ)). But through these ports you need to pass some C-VLAN without changing or add S-VLAN . Now we are solving the problem of skipping a certain C-VLAN without adding an S-VLAN by creating a Switch Rule with action “Copy to CPU” and using interface vlan and other bridge but it is solution loads CPU because the CPU is used but not the switch.
This feature can be added to Switch rule by expanding the functionality.