[ 1644.614178] br0: port 1(dummy0) entered blocking state
[ 1644.614218] br0: port 1(dummy0) entered disabled state
[ 1644.614250] dummy0: entered allmulticast mode
[ 1644.614301] dummy0: entered promiscuous mode
[ 1644.616797] br0: port 1(dummy0) entered blocking state
[ 1644.616857] br0: port 1(dummy0) entered forwarding state
[ 1644.805079] dummy0: left allmulticast mode
[ 1644.805152] dummy0: left promiscuous mode
[ 1644.805211] br0: port 1(dummy0) entered disabled state