Why not be closed or Bolck all P2P

I using this roule But P2P still working!!! WHY???
/ip firewall filter
add chain=forward p2p=all-p2p action=drop


How can I close all the P2P final

should be working. what kind of p2p program is still working? stop using big letters, it will not help you

Don’t you have to go to Mangle, mark connection in prerouting, then mark packet in prerouting, then drop in Forward?

That´s the way I am doing, am I missing something?

no, this one rule will be enough