[ 1632.264986] br0: port 1(dummy0) entered blocking state
[ 1632.265041] br0: port 1(dummy0) entered disabled state
[ 1632.265076] dummy0: entered allmulticast mode
[ 1632.265135] dummy0: entered promiscuous mode
[ 1632.267613] br0: port 1(dummy0) entered blocking state
[ 1632.267677] br0: port 1(dummy0) entered forwarding state
[ 1632.449929] dummy0: left allmulticast mode
[ 1632.449998] dummy0: left promiscuous mode
[ 1632.450037] br0: port 1(dummy0) entered disabled state