[ 1897.043294] br0: port 1(dummy0) entered blocking state
[ 1897.043337] br0: port 1(dummy0) entered disabled state
[ 1897.043371] dummy0: entered allmulticast mode
[ 1897.043422] dummy0: entered promiscuous mode
[ 1897.046881] br0: port 1(dummy0) entered blocking state
[ 1897.046943] br0: port 1(dummy0) entered forwarding state
[ 1897.298364] dummy0: left allmulticast mode
[ 1897.298396] dummy0: left promiscuous mode
[ 1897.298424] br0: port 1(dummy0) entered disabled state