[ 1823.718640] br0: port 1(dummy0) entered blocking state
[ 1823.718717] br0: port 1(dummy0) entered disabled state
[ 1823.718786] dummy0: entered allmulticast mode
[ 1823.718877] dummy0: entered promiscuous mode
[ 1823.722118] br0: port 1(dummy0) entered blocking state
[ 1823.722153] br0: port 1(dummy0) entered forwarding state
[ 1823.925516] dummy0: left allmulticast mode
[ 1823.925587] dummy0: left promiscuous mode
[ 1823.925653] br0: port 1(dummy0) entered disabled state