[ 1730.187464] br0: port 1(dummy0) entered blocking state
[ 1730.187538] br0: port 1(dummy0) entered disabled state
[ 1730.187603] dummy0: entered allmulticast mode
[ 1730.187684] dummy0: entered promiscuous mode
[ 1730.190442] br0: port 1(dummy0) entered blocking state
[ 1730.190471] br0: port 1(dummy0) entered forwarding state
[ 1730.381278] dummy0: left allmulticast mode
[ 1730.381312] dummy0: left promiscuous mode
[ 1730.381342] br0: port 1(dummy0) entered disabled state