[ 1723.744708] br0: port 1(dummy0) entered blocking state
[ 1723.744742] br0: port 1(dummy0) entered disabled state
[ 1723.744781] dummy0: entered allmulticast mode
[ 1723.744833] dummy0: entered promiscuous mode
[ 1723.748366] br0: port 1(dummy0) entered blocking state
[ 1723.748429] br0: port 1(dummy0) entered forwarding state
[ 1724.001432] dummy0: left allmulticast mode
[ 1724.001472] dummy0: left promiscuous mode
[ 1724.001565] br0: port 1(dummy0) entered disabled state