[ 2328.735939][ T3752] br0: port 1(dummy0) entered blocking state
[ 2328.736249][ T3752] br0: port 1(dummy0) entered disabled state
[ 2328.736550][ T3752] dummy0: entered allmulticast mode
[ 2328.737597][ T3752] dummy0: entered promiscuous mode
[ 2328.774724][ T3753] br0: port 1(dummy0) entered blocking state
[ 2328.775097][ T3753] br0: port 1(dummy0) entered forwarding state
[ 2331.353855][   T12] dummy0: left allmulticast mode
[ 2331.354847][   T12] dummy0: left promiscuous mode
[ 2331.355387][   T12] br0: port 1(dummy0) entered disabled state