[ 1843.366294] br0: port 1(dummy0) entered blocking state
[ 1843.366320] br0: port 1(dummy0) entered disabled state
[ 1843.366342] dummy0: entered allmulticast mode
[ 1843.366378] dummy0: entered promiscuous mode
[ 1843.370008] br0: port 1(dummy0) entered blocking state
[ 1843.370055] br0: port 1(dummy0) entered forwarding state
[ 1843.626374] dummy0: left allmulticast mode
[ 1843.626406] dummy0: left promiscuous mode
[ 1843.626427] br0: port 1(dummy0) entered disabled state