[ 1654.235623] br0: port 1(dummy0) entered blocking state
[ 1654.235670] br0: port 1(dummy0) entered disabled state
[ 1654.235706] dummy0: entered allmulticast mode
[ 1654.235772] dummy0: entered promiscuous mode
[ 1654.238270] br0: port 1(dummy0) entered blocking state
[ 1654.238338] br0: port 1(dummy0) entered forwarding state
[ 1654.415550] dummy0: left allmulticast mode
[ 1654.415592] dummy0: left promiscuous mode
[ 1654.415623] br0: port 1(dummy0) entered disabled state