[ 1887.617281] br0: port 1(dummy0) entered blocking state
[ 1887.617354] br0: port 1(dummy0) entered disabled state
[ 1887.617419] dummy0: entered allmulticast mode
[ 1887.617505] dummy0: entered promiscuous mode
[ 1887.620997] br0: port 1(dummy0) entered blocking state
[ 1887.621027] br0: port 1(dummy0) entered forwarding state
[ 1887.881431] dummy0: left allmulticast mode
[ 1887.881465] dummy0: left promiscuous mode
[ 1887.881495] br0: port 1(dummy0) entered disabled state