[ 1835.350703] br0: port 1(dummy0) entered blocking state
[ 1835.350779] br0: port 1(dummy0) entered disabled state
[ 1835.350847] dummy0: entered allmulticast mode
[ 1835.350941] dummy0: entered promiscuous mode
[ 1835.354751] br0: port 1(dummy0) entered blocking state
[ 1835.354786] br0: port 1(dummy0) entered forwarding state
[ 1835.618954] dummy0: left allmulticast mode
[ 1835.619001] dummy0: left promiscuous mode
[ 1835.619037] br0: port 1(dummy0) entered disabled state