how I can change the 802.1p marking with Mikrotik , I am using routerboard 800,600 and 433AH. Is it possible to prioritize the traffic based on 802.1p bit if I receive already marked traffic from a layer 2 switch. with following rule I am able to pass the 802.1p bit as it is but I am not sure Mikrotik giving it any priority or not. thanks in advance.

0 chain=postrouting action=set-priority new-priority=from-dscp( or ingress) passthrough=yes

use 'ingress-priority' matcher to match packets and mark them for your queues with different priorities or something