[ 1667.378053] br0: port 1(dummy0) entered blocking state
[ 1667.378125] br0: port 1(dummy0) entered disabled state
[ 1667.378188] dummy0: entered allmulticast mode
[ 1667.378269] dummy0: entered promiscuous mode
[ 1667.381261] br0: port 1(dummy0) entered blocking state
[ 1667.381321] br0: port 1(dummy0) entered forwarding state
[ 1667.575189] dummy0: left allmulticast mode
[ 1667.575231] dummy0: left promiscuous mode
[ 1667.575291] br0: port 1(dummy0) entered disabled state