[ 1913.993998] br0: port 1(dummy0) entered blocking state
[ 1913.994078] br0: port 1(dummy0) entered disabled state
[ 1913.994146] dummy0: entered allmulticast mode
[ 1913.994235] dummy0: entered promiscuous mode
[ 1913.997927] br0: port 1(dummy0) entered blocking state
[ 1913.997970] br0: port 1(dummy0) entered forwarding state
[ 1914.259735] dummy0: left allmulticast mode
[ 1914.259786] dummy0: left promiscuous mode
[ 1914.259836] br0: port 1(dummy0) entered disabled state