how to set fasttrack for specific interface

hello!!

what is the correct way to set fasttrack for specific interface, cause right now, it disabling me my que tree in wlan, i want to set it only for the lan ether2 or bridge 1

You can set it in whatever way /ip firewall filter allows you. I.e.

/ip firewall filter
add action=fasttrack-connection chain=forward comment="fasttrack ether2"
    in-interface=ether2 connection-state=established,related

Probably doesn’t work for “enslaved” interfaces (e.g. interfaces which are members of a bridge …), using slave interface for L3 functionality (IP address etc.) sometimes causes weird side-effects …

thank you!!
it worked!