[  313.243233][ T4698] br0: port 1(dummy0) entered blocking state
[  313.243437][ T4698] br0: port 1(dummy0) entered disabled state
[  313.243603][ T4698] dummy0: entered allmulticast mode
[  313.244741][ T4698] dummy0: entered promiscuous mode
[  313.275845][ T4699] br0: port 1(dummy0) entered blocking state
[  313.276169][ T4699] br0: port 1(dummy0) entered forwarding state
[  315.674875][   T12] dummy0: left allmulticast mode
[  315.675909][   T12] dummy0: left promiscuous mode
[  315.676231][   T12] br0: port 1(dummy0) entered disabled state