[ 2254.698601][T26395] br0: port 1(dummy0) entered blocking state
[ 2254.699260][T26395] br0: port 1(dummy0) entered disabled state
[ 2254.699548][T26395] dummy0: entered allmulticast mode
[ 2254.700554][T26395] dummy0: entered promiscuous mode
[ 2254.739439][T26396] br0: port 1(dummy0) entered blocking state
[ 2254.739771][T26396] br0: port 1(dummy0) entered forwarding state
[ 2257.223557][   T12] dummy0: left allmulticast mode
[ 2257.223887][   T12] dummy0: left promiscuous mode
[ 2257.224231][   T12] br0: port 1(dummy0) entered disabled state