[ 1677.119410] br0: port 1(dummy0) entered blocking state
[ 1677.119460] br0: port 1(dummy0) entered disabled state
[ 1677.119493] dummy0: entered allmulticast mode
[ 1677.119544] dummy0: entered promiscuous mode
[ 1677.122506] br0: port 1(dummy0) entered blocking state
[ 1677.122570] br0: port 1(dummy0) entered forwarding state
[ 1677.309267] dummy0: left allmulticast mode
[ 1677.309352] dummy0: left promiscuous mode
[ 1677.309417] br0: port 1(dummy0) entered disabled state