I would like to do some rp filter checking on a single interface.
RouterOS providers the RP Filter seting in IP settings, but it is global for the entire router.
Linux iptables provides the "rpfilter" matcher that can be applied in the raw or mangle prerouting chain,
to do per-packet RP Filter matches that can be tied to an input interface, a source address range, etc
and then used to mark or drop the packet.
I have not found how it is configurable in RouterOS. Is it available, and if so, how?