[  451.694162] br0: port 1(dummy0) entered blocking state
[  451.694239] br0: port 1(dummy0) entered disabled state
[  451.694316] dummy0: entered allmulticast mode
[  451.694407] dummy0: entered promiscuous mode
[  451.698048] br0: port 1(dummy0) entered blocking state
[  451.698079] br0: port 1(dummy0) entered forwarding state
[  451.960072] dummy0: left allmulticast mode
[  451.960229] dummy0: left promiscuous mode
[  451.960291] br0: port 1(dummy0) entered disabled state