[ 1851.697520] br0: port 1(dummy0) entered blocking state
[ 1851.697601] br0: port 1(dummy0) entered disabled state
[ 1851.697672] dummy0: entered allmulticast mode
[ 1851.697757] dummy0: entered promiscuous mode
[ 1851.701370] br0: port 1(dummy0) entered blocking state
[ 1851.701407] br0: port 1(dummy0) entered forwarding state
[ 1851.963486] dummy0: left allmulticast mode
[ 1851.963526] dummy0: left promiscuous mode
[ 1851.963559] br0: port 1(dummy0) entered disabled state