[ 1742.977298] br0: port 1(dummy0) entered blocking state
[ 1742.977354] br0: port 1(dummy0) entered disabled state
[ 1742.977383] dummy0: entered allmulticast mode
[ 1742.977437] dummy0: entered promiscuous mode
[ 1742.980502] br0: port 1(dummy0) entered blocking state
[ 1742.980563] br0: port 1(dummy0) entered forwarding state
[ 1743.199442] dummy0: left allmulticast mode
[ 1743.199508] dummy0: left promiscuous mode
[ 1743.199570] br0: port 1(dummy0) entered disabled state