[  213.396627][ T3948] br0: port 1(dummy0) entered blocking state
[  213.397399][ T3948] br0: port 1(dummy0) entered disabled state
[  213.397631][ T3948] dummy0: entered allmulticast mode
[  213.398680][ T3948] dummy0: entered promiscuous mode
[  213.431791][ T3949] br0: port 1(dummy0) entered blocking state
[  213.432034][ T3949] br0: port 1(dummy0) entered forwarding state
[  215.405283][   T12] dummy0: left allmulticast mode
[  215.405933][   T12] dummy0: left promiscuous mode
[  215.406255][   T12] br0: port 1(dummy0) entered disabled state