[ 1869.041030] br0: port 1(dummy0) entered blocking state
[ 1869.041064] br0: port 1(dummy0) entered disabled state
[ 1869.041100] dummy0: entered allmulticast mode
[ 1869.041147] dummy0: entered promiscuous mode
[ 1869.044033] br0: port 1(dummy0) entered blocking state
[ 1869.044064] br0: port 1(dummy0) entered forwarding state
[ 1869.233498] dummy0: left allmulticast mode
[ 1869.233524] dummy0: left promiscuous mode
[ 1869.233545] br0: port 1(dummy0) entered disabled state