[ 1892.766628] br0: port 1(dummy0) entered blocking state
[ 1892.766712] br0: port 1(dummy0) entered disabled state
[ 1892.766777] dummy0: entered allmulticast mode
[ 1892.766869] dummy0: entered promiscuous mode
[ 1892.770686] br0: port 1(dummy0) entered blocking state
[ 1892.770735] br0: port 1(dummy0) entered forwarding state
[ 1893.044787] dummy0: left allmulticast mode
[ 1893.044872] dummy0: left promiscuous mode
[ 1893.044932] br0: port 1(dummy0) entered disabled state