[ 1688.732982] br0: port 1(dummy0) entered blocking state
[ 1688.733024] br0: port 1(dummy0) entered disabled state
[ 1688.733071] dummy0: entered allmulticast mode
[ 1688.733125] dummy0: entered promiscuous mode
[ 1688.736433] br0: port 1(dummy0) entered blocking state
[ 1688.736495] br0: port 1(dummy0) entered forwarding state
[ 1688.983452] dummy0: left allmulticast mode
[ 1688.983486] dummy0: left promiscuous mode
[ 1688.983518] br0: port 1(dummy0) entered disabled state