I came across this: https://help.mikrotik.com/docs/pages/vi ... d=59277471

And was wondering how can we use it to fetch invalid IPv4 & IPv6 prefixes and dump those into a firewall address list respectively from the public rtr.rpki.cloudflare.com?

I would prefer dropping the prefixes using the raw table rather than a route to the black hole to keep CPU usage to a minimum.