I've two networks connected by routerbard:
X.X.1.0/24 <-> RB <-> X.X.2.0/24
I'd like to use multicast (for Vypress Chat), so I enabled PIM interface. It is working, but the problem is, that the second network is not only for me and there are also other IP subnets. So my router is receiving a lot of IGMP traffic from unknown IP addresses and there are a lot of warnings in log ("source must be directly connected").

How to filter out IGMP traffic? I've created filter rule on firewall: - it is increasing packet count and bytes, but PIM is still receiving these packets

add action=drop chain=input comment="" disabled=no protocol=igmp

add action=drop chain=input comment="" disabled=no protocol=igmp

Not bad idea to use protocol=igmp, but the problem remains: interfaces with enabled PIM/IGMP are still receiving packets - it seems like PIM (from package multicast) is working before the firewall filter rules are applied?

I'm also having an issue with this.

I am trying to block VRRP, and if I drop VRRP (proto 112) on output chain and also separately drop dest 224.0.0.18 on output chain it doesn't trigger at all. And on receiving router it gets the packet from proto 112 heading towards 224.0.0.18...