[ 1607.590266] br0: port 1(dummy0) entered blocking state
[ 1607.590307] br0: port 1(dummy0) entered disabled state
[ 1607.590346] dummy0: entered allmulticast mode
[ 1607.590396] dummy0: entered promiscuous mode
[ 1607.593226] br0: port 1(dummy0) entered blocking state
[ 1607.593290] br0: port 1(dummy0) entered forwarding state
[ 1607.781860] dummy0: left allmulticast mode
[ 1607.781892] dummy0: left promiscuous mode
[ 1607.781918] br0: port 1(dummy0) entered disabled state