[ 1663.573835] br0: port 1(dummy0) entered blocking state
[ 1663.573882] br0: port 1(dummy0) entered disabled state
[ 1663.573920] dummy0: entered allmulticast mode
[ 1663.573971] dummy0: entered promiscuous mode
[ 1663.577378] br0: port 1(dummy0) entered blocking state
[ 1663.577451] br0: port 1(dummy0) entered forwarding state
[ 1663.791471] dummy0: left allmulticast mode
[ 1663.791513] dummy0: left promiscuous mode
[ 1663.791549] br0: port 1(dummy0) entered disabled state