[ 2344.548620][T22448] br0: port 1(dummy0) entered blocking state
[ 2344.548806][T22448] br0: port 1(dummy0) entered disabled state
[ 2344.548973][T22448] dummy0: entered allmulticast mode
[ 2344.549877][T22448] dummy0: entered promiscuous mode
[ 2344.574441][T22449] br0: port 1(dummy0) entered blocking state
[ 2344.574672][T22449] br0: port 1(dummy0) entered forwarding state
[ 2346.973403][   T12] dummy0: left allmulticast mode
[ 2346.973697][   T12] dummy0: left promiscuous mode
[ 2346.973938][   T12] br0: port 1(dummy0) entered disabled state