[ 1719.286966] br0: port 1(dummy0) entered blocking state
[ 1719.287034] br0: port 1(dummy0) entered disabled state
[ 1719.287099] dummy0: entered allmulticast mode
[ 1719.287182] dummy0: entered promiscuous mode
[ 1719.289911] br0: port 1(dummy0) entered blocking state
[ 1719.289940] br0: port 1(dummy0) entered forwarding state
[ 1719.484927] dummy0: left allmulticast mode
[ 1719.484957] dummy0: left promiscuous mode
[ 1719.484986] br0: port 1(dummy0) entered disabled state