[   65.630347][ T1938] br0: port 1(dummy0) entered blocking state
[   65.630608][ T1938] br0: port 1(dummy0) entered disabled state
[   65.630940][ T1938] dummy0: entered allmulticast mode
[   65.632038][ T1938] dummy0: entered promiscuous mode
[   65.664444][ T1939] br0: port 1(dummy0) entered blocking state
[   65.664690][ T1939] br0: port 1(dummy0) entered forwarding state
[   68.121495][   T12] dummy0: left allmulticast mode
[   68.122372][   T12] dummy0: left promiscuous mode
[   68.122737][   T12] br0: port 1(dummy0) entered disabled state