CARP + LoadBalancing failover mode

[dpcma]

Is it possible to avoid that multicast/broadcast packet goes from lan to wan producing a problem on the network, when
multiwan + CARP + LoadBalancing in Failover mode is configured with not outgoing NAT?

Thank you

[Eugene]

You can explicitly disable multicast/broadcast and put these rules on the top.
Or alternatively - do not allow ANY protocol to ANY address but allow only traffic you really need to allow.
First approach is more efficient as multicast/broadcast packets are droped without going through all rules before being dropped by 'default deny all'.