[ 1742.981444] br0: port 1(dummy0) entered blocking state
[ 1742.981485] br0: port 1(dummy0) entered disabled state
[ 1742.981518] dummy0: entered allmulticast mode
[ 1742.981576] dummy0: entered promiscuous mode
[ 1742.984041] br0: port 1(dummy0) entered blocking state
[ 1742.984101] br0: port 1(dummy0) entered forwarding state
[ 1743.161051] dummy0: left allmulticast mode
[ 1743.161083] dummy0: left promiscuous mode
[ 1743.161109] br0: port 1(dummy0) entered disabled state