[ 1773.231478] br0: port 1(dummy0) entered blocking state
[ 1773.231514] br0: port 1(dummy0) entered disabled state
[ 1773.231548] dummy0: entered allmulticast mode
[ 1773.231605] dummy0: entered promiscuous mode
[ 1773.234832] br0: port 1(dummy0) entered blocking state
[ 1773.234891] br0: port 1(dummy0) entered forwarding state
[ 1773.461654] dummy0: left allmulticast mode
[ 1773.461683] dummy0: left promiscuous mode
[ 1773.461716] br0: port 1(dummy0) entered disabled state