[ 1707.258940] br0: port 1(dummy0) entered blocking state
[ 1707.259005] br0: port 1(dummy0) entered disabled state
[ 1707.259062] dummy0: entered allmulticast mode
[ 1707.259139] dummy0: entered promiscuous mode
[ 1707.261814] br0: port 1(dummy0) entered blocking state
[ 1707.261834] br0: port 1(dummy0) entered forwarding state
[ 1707.436227] dummy0: left allmulticast mode
[ 1707.436246] dummy0: left promiscuous mode
[ 1707.436263] br0: port 1(dummy0) entered disabled state