[ 1742.919948] br0: port 1(dummy0) entered blocking state
[ 1742.919994] br0: port 1(dummy0) entered disabled state
[ 1742.920023] dummy0: entered allmulticast mode
[ 1742.920082] dummy0: entered promiscuous mode
[ 1742.923378] br0: port 1(dummy0) entered blocking state
[ 1742.923442] br0: port 1(dummy0) entered forwarding state
[ 1743.143532] dummy0: left allmulticast mode
[ 1743.143576] dummy0: left promiscuous mode
[ 1743.143640] br0: port 1(dummy0) entered disabled state