[ 1609.987562] br0: port 1(dummy0) entered blocking state
[ 1609.987629] br0: port 1(dummy0) entered disabled state
[ 1609.987677] dummy0: entered allmulticast mode
[ 1609.987729] dummy0: entered promiscuous mode
[ 1609.991587] br0: port 1(dummy0) entered blocking state
[ 1609.991663] br0: port 1(dummy0) entered forwarding state
[ 1610.208231] dummy0: left allmulticast mode
[ 1610.208276] dummy0: left promiscuous mode
[ 1610.208315] br0: port 1(dummy0) entered disabled state