[ 1669.670531] br0: port 1(dummy0) entered blocking state
[ 1669.670575] br0: port 1(dummy0) entered disabled state
[ 1669.670617] dummy0: entered allmulticast mode
[ 1669.670665] dummy0: entered promiscuous mode
[ 1669.674087] br0: port 1(dummy0) entered blocking state
[ 1669.674152] br0: port 1(dummy0) entered forwarding state
[ 1669.897386] dummy0: left allmulticast mode
[ 1669.897456] dummy0: left promiscuous mode
[ 1669.897554] br0: port 1(dummy0) entered disabled state