[ 1658.386638] br0: port 1(dummy0) entered blocking state
[ 1658.386680] br0: port 1(dummy0) entered disabled state
[ 1658.386722] dummy0: entered allmulticast mode
[ 1658.386777] dummy0: entered promiscuous mode
[ 1658.389525] br0: port 1(dummy0) entered blocking state
[ 1658.389586] br0: port 1(dummy0) entered forwarding state
[ 1658.578023] dummy0: left allmulticast mode
[ 1658.578094] dummy0: left promiscuous mode
[ 1658.578154] br0: port 1(dummy0) entered disabled state