[ 1812.472865] br0: port 1(dummy0) entered blocking state
[ 1812.472950] br0: port 1(dummy0) entered disabled state
[ 1812.473020] dummy0: entered allmulticast mode
[ 1812.473104] dummy0: entered promiscuous mode
[ 1812.476706] br0: port 1(dummy0) entered blocking state
[ 1812.476745] br0: port 1(dummy0) entered forwarding state
[ 1812.735738] dummy0: left allmulticast mode
[ 1812.735780] dummy0: left promiscuous mode
[ 1812.735838] br0: port 1(dummy0) entered disabled state