[ 1724.330596] br0: port 1(dummy0) entered blocking state
[ 1724.330692] br0: port 1(dummy0) entered disabled state
[ 1724.330765] dummy0: entered allmulticast mode
[ 1724.330862] dummy0: entered promiscuous mode
[ 1724.333955] br0: port 1(dummy0) entered blocking state
[ 1724.333987] br0: port 1(dummy0) entered forwarding state
[ 1724.541331] dummy0: left allmulticast mode
[ 1724.541387] dummy0: left promiscuous mode
[ 1724.541422] br0: port 1(dummy0) entered disabled state