[  974.435370] br0: port 1(dummy0) entered blocking state
[  974.435439] br0: port 1(dummy0) entered disabled state
[  974.435492] dummy0: entered allmulticast mode
[  974.435561] dummy0: entered promiscuous mode
[  974.438794] br0: port 1(dummy0) entered blocking state
[  974.438841] br0: port 1(dummy0) entered forwarding state
[  974.686407] dummy0: left allmulticast mode
[  974.686434] dummy0: left promiscuous mode
[  974.686459] br0: port 1(dummy0) entered disabled state