[ 1842.552196] br0: port 1(dummy0) entered blocking state
[ 1842.552235] br0: port 1(dummy0) entered disabled state
[ 1842.552277] dummy0: entered allmulticast mode
[ 1842.552327] dummy0: entered promiscuous mode
[ 1842.555927] br0: port 1(dummy0) entered blocking state
[ 1842.555993] br0: port 1(dummy0) entered forwarding state
[ 1842.828559] dummy0: left allmulticast mode
[ 1842.828608] dummy0: left promiscuous mode
[ 1842.828642] br0: port 1(dummy0) entered disabled state