[ 1897.919281] br0: port 1(dummy0) entered blocking state
[ 1897.919326] br0: port 1(dummy0) entered disabled state
[ 1897.919364] dummy0: entered allmulticast mode
[ 1897.919429] dummy0: entered promiscuous mode
[ 1897.923329] br0: port 1(dummy0) entered blocking state
[ 1897.923362] br0: port 1(dummy0) entered forwarding state
[ 1898.216383] dummy0: left allmulticast mode
[ 1898.216430] dummy0: left promiscuous mode
[ 1898.216478] br0: port 1(dummy0) entered disabled state