[ 2251.487039][ T9762] br0: port 1(dummy0) entered blocking state
[ 2251.487229][ T9762] br0: port 1(dummy0) entered disabled state
[ 2251.487388][ T9762] dummy0: entered allmulticast mode
[ 2251.488408][ T9762] dummy0: entered promiscuous mode
[ 2251.513929][ T9763] br0: port 1(dummy0) entered blocking state
[ 2251.514194][ T9763] br0: port 1(dummy0) entered forwarding state
[ 2253.813957][   T12] dummy0: left allmulticast mode
[ 2253.814854][   T12] dummy0: left promiscuous mode
[ 2253.815140][   T12] br0: port 1(dummy0) entered disabled state