[ 2022.015206] br0: port 1(dummy0) entered blocking state
[ 2022.015287] br0: port 1(dummy0) entered disabled state
[ 2022.015356] dummy0: entered allmulticast mode
[ 2022.015449] dummy0: entered promiscuous mode
[ 2022.019102] br0: port 1(dummy0) entered blocking state
[ 2022.019137] br0: port 1(dummy0) entered forwarding state
[ 2022.291147] dummy0: left allmulticast mode
[ 2022.291190] dummy0: left promiscuous mode
[ 2022.291219] br0: port 1(dummy0) entered disabled state