[ 2239.573000][T16898] br0: port 1(dummy0) entered blocking state
[ 2239.573897][T16898] br0: port 1(dummy0) entered disabled state
[ 2239.574184][T16898] dummy0: entered allmulticast mode
[ 2239.575176][T16898] dummy0: entered promiscuous mode
[ 2239.602409][T16899] br0: port 1(dummy0) entered blocking state
[ 2239.602818][T16899] br0: port 1(dummy0) entered forwarding state
[ 2242.094846][   T12] dummy0: left allmulticast mode
[ 2242.096243][   T12] dummy0: left promiscuous mode
[ 2242.096643][   T12] br0: port 1(dummy0) entered disabled state