[ 1769.596830] br0: port 1(dummy0) entered blocking state
[ 1769.596857] br0: port 1(dummy0) entered disabled state
[ 1769.596878] dummy0: entered allmulticast mode
[ 1769.596913] dummy0: entered promiscuous mode
[ 1769.600473] br0: port 1(dummy0) entered blocking state
[ 1769.600491] br0: port 1(dummy0) entered forwarding state
[ 1769.872643] dummy0: left allmulticast mode
[ 1769.872684] dummy0: left promiscuous mode
[ 1769.872704] br0: port 1(dummy0) entered disabled state