[ 1812.392450] br0: port 1(dummy0) entered blocking state
[ 1812.392523] br0: port 1(dummy0) entered disabled state
[ 1812.392599] dummy0: entered allmulticast mode
[ 1812.392683] dummy0: entered promiscuous mode
[ 1812.395515] br0: port 1(dummy0) entered blocking state
[ 1812.395550] br0: port 1(dummy0) entered forwarding state
[ 1812.577774] dummy0: left allmulticast mode
[ 1812.577841] dummy0: left promiscuous mode
[ 1812.577902] br0: port 1(dummy0) entered disabled state