[ 1918.140623] br0: port 1(dummy0) entered blocking state
[ 1918.140661] br0: port 1(dummy0) entered disabled state
[ 1918.140706] dummy0: entered allmulticast mode
[ 1918.140752] dummy0: entered promiscuous mode
[ 1918.144430] br0: port 1(dummy0) entered blocking state
[ 1918.144462] br0: port 1(dummy0) entered forwarding state
[ 1918.422184] dummy0: left allmulticast mode
[ 1918.422245] dummy0: left promiscuous mode
[ 1918.422306] br0: port 1(dummy0) entered disabled state