[  423.276449] br0: port 1(dummy0) entered blocking state
[  423.277676] br0: port 1(dummy0) entered disabled state
[  423.278971] device dummy0 entered promiscuous mode
[  423.412459] br0: port 1(dummy0) entered blocking state
[  423.437840] br0: port 1(dummy0) entered forwarding state
[  423.968767] br0: port 1(dummy0) entered disabled state
[  424.191806] device dummy0 left promiscuous mode
[  424.193047] br0: port 1(dummy0) entered disabled state