[ 1673.385323] br0: port 1(dummy0) entered blocking state
[ 1673.385401] br0: port 1(dummy0) entered disabled state
[ 1673.385468] dummy0: entered allmulticast mode
[ 1673.385565] dummy0: entered promiscuous mode
[ 1673.388424] br0: port 1(dummy0) entered blocking state
[ 1673.388458] br0: port 1(dummy0) entered forwarding state
[ 1673.586900] dummy0: left allmulticast mode
[ 1673.586964] dummy0: left promiscuous mode
[ 1673.587029] br0: port 1(dummy0) entered disabled state