[ 1835.478333] br0: port 1(dummy0) entered blocking state
[ 1835.478372] br0: port 1(dummy0) entered disabled state
[ 1835.478409] dummy0: entered allmulticast mode
[ 1835.478461] dummy0: entered promiscuous mode
[ 1835.481251] br0: port 1(dummy0) entered blocking state
[ 1835.481311] br0: port 1(dummy0) entered forwarding state
[ 1835.664434] dummy0: left allmulticast mode
[ 1835.664469] dummy0: left promiscuous mode
[ 1835.664521] br0: port 1(dummy0) entered disabled state