[ 1856.885133] br0: port 1(dummy0) entered blocking state
[ 1856.885166] br0: port 1(dummy0) entered disabled state
[ 1856.885267] dummy0: entered allmulticast mode
[ 1856.885341] dummy0: entered promiscuous mode
[ 1856.888807] br0: port 1(dummy0) entered blocking state
[ 1856.888828] br0: port 1(dummy0) entered forwarding state
[ 1857.151751] dummy0: left allmulticast mode
[ 1857.151780] dummy0: left promiscuous mode
[ 1857.151805] br0: port 1(dummy0) entered disabled state