[ 1720.174234] br0: port 1(dummy0) entered blocking state
[ 1720.174277] br0: port 1(dummy0) entered disabled state
[ 1720.174306] dummy0: entered allmulticast mode
[ 1720.174356] dummy0: entered promiscuous mode
[ 1720.176637] br0: port 1(dummy0) entered blocking state
[ 1720.176667] br0: port 1(dummy0) entered forwarding state
[ 1720.345009] dummy0: left allmulticast mode
[ 1720.345085] dummy0: left promiscuous mode
[ 1720.345140] br0: port 1(dummy0) entered disabled state