On Wed, Sep 30, 2020 at 12:09:03PM +0200, Peter Vollmer wrote: > lan0..lan3 are members of the br0 bridge interface.
and so is eth0, I assume? > The problem is that for ICMP ping lan0-> eth0, ICMP ping request > packets are leaking (i.e. flooded) to all other ports lan1..lan3, > while the ping reply eth0->lan0 arrives correctly at lan0 without any > leaked packets on lan1..lan3. What are you pinging exactly, the IP of the eth0 interface, or a station connected to the eth0 which is part of the same bridge as the lan ports? Thanks, -Vladimir