[  568.043028][T10687] br0: port 1(dummy0) entered blocking state
[  568.043294][T10687] br0: port 1(dummy0) entered disabled state
[  568.043554][T10687] dummy0: entered allmulticast mode
[  568.044742][T10687] dummy0: entered promiscuous mode
[  568.073127][T10688] br0: port 1(dummy0) entered blocking state
[  568.073445][T10688] br0: port 1(dummy0) entered forwarding state
[  570.038802][   T12] dummy0: left allmulticast mode
[  570.039120][   T12] dummy0: left promiscuous mode
[  570.039347][   T12] br0: port 1(dummy0) entered disabled state