[ 1806.228144] br0: port 1(dummy0) entered blocking state
[ 1806.228194] br0: port 1(dummy0) entered disabled state
[ 1806.228227] dummy0: entered allmulticast mode
[ 1806.228281] dummy0: entered promiscuous mode
[ 1806.231919] br0: port 1(dummy0) entered blocking state
[ 1806.231961] br0: port 1(dummy0) entered forwarding state
[ 1806.495071] dummy0: left allmulticast mode
[ 1806.495149] dummy0: left promiscuous mode
[ 1806.495234] br0: port 1(dummy0) entered disabled state