[ 1585.112506] br0: port 1(dummy0) entered blocking state
[ 1585.112550] br0: port 1(dummy0) entered disabled state
[ 1585.112586] dummy0: entered allmulticast mode
[ 1585.112638] dummy0: entered promiscuous mode
[ 1585.115537] br0: port 1(dummy0) entered blocking state
[ 1585.115571] br0: port 1(dummy0) entered forwarding state
[ 1585.318800] dummy0: left allmulticast mode
[ 1585.318836] dummy0: left promiscuous mode
[ 1585.318875] br0: port 1(dummy0) entered disabled state