[ 1200.129947] br0: port 1(dummy0) entered blocking state
[ 1200.129983] br0: port 1(dummy0) entered disabled state
[ 1200.130017] dummy0: entered allmulticast mode
[ 1200.130062] dummy0: entered promiscuous mode
[ 1200.132868] br0: port 1(dummy0) entered blocking state
[ 1200.132929] br0: port 1(dummy0) entered forwarding state
[ 1200.318972] dummy0: left allmulticast mode
[ 1200.319055] dummy0: left promiscuous mode
[ 1200.319120] br0: port 1(dummy0) entered disabled state