We want to block traffic in a Mikrotik antenna connected to our network. We've tested with IP-Firewall-Filter Rules adding this rule:

“chain = forward action = src drop-mac-address = XX:XX:XX:XX:XX:XX”

And has worked well for customers who are assigned by IP DHCP. However, we are still having problems with customers who have PPPoE IP, they are not affected by this rule. We have been trying to configure some kind of comparable rule for PPPoE customers, but it has been impossible to obtain good results.
The thing is that we want to block all kind of traffic from a list of known MACs, but our tests have not been successful. Could you give us an idea of how to configure this kind of dropping?

Put iface where your clients are connected into bridge. Then create bridge filter and drop mac-protocol 8863 and 8864. Should help.

I have a configuration in wich are used DHCP and PPPoE. In our test we have tried to add the customers interface to the bridge and after that the router was automatically restarted. Have you experienced any problem when you try to do this? Have you had this type of problems?

How could we do to add the interface to the bridge and keep the router working correctly?