On Sat, Apr 27, 2019 at 04:38:49AM +0200, Linus Lüssing wrote:
The desired behaviour in this case would be to let multicast packets pass unless they would be flooded. A firewall does not know which mechanism batman-adv would choose. Hence this option within batman-adv to create this desired behaviour.
Or in other words: I want to allow people to experiment with and use multicast in a variety of undefined applications. But I don't want them to break things for everyone else (which could happen with no firewall rules, too many listeners and a broadcast flooding fallback).