[ 1628.223440] br0: port 1(dummy0) entered blocking state
[ 1628.223481] br0: port 1(dummy0) entered disabled state
[ 1628.223517] dummy0: entered allmulticast mode
[ 1628.223564] dummy0: entered promiscuous mode
[ 1628.226375] br0: port 1(dummy0) entered blocking state
[ 1628.226437] br0: port 1(dummy0) entered forwarding state
[ 1628.417746] dummy0: left allmulticast mode
[ 1628.417779] dummy0: left promiscuous mode
[ 1628.417836] br0: port 1(dummy0) entered disabled state