[ 1708.635903] br0: port 1(dummy0) entered blocking state
[ 1708.635944] br0: port 1(dummy0) entered disabled state
[ 1708.635982] dummy0: entered allmulticast mode
[ 1708.636034] dummy0: entered promiscuous mode
[ 1708.639696] br0: port 1(dummy0) entered blocking state
[ 1708.639761] br0: port 1(dummy0) entered forwarding state
[ 1708.911813] dummy0: left allmulticast mode
[ 1708.911877] dummy0: left promiscuous mode
[ 1708.911943] br0: port 1(dummy0) entered disabled state