[ 1700.646898] br0: port 1(dummy0) entered blocking state
[ 1700.646939] br0: port 1(dummy0) entered disabled state
[ 1700.646979] dummy0: entered allmulticast mode
[ 1700.647022] dummy0: entered promiscuous mode
[ 1700.649856] br0: port 1(dummy0) entered blocking state
[ 1700.649888] br0: port 1(dummy0) entered forwarding state
[ 1700.846135] dummy0: left allmulticast mode
[ 1700.846166] dummy0: left promiscuous mode
[ 1700.846195] br0: port 1(dummy0) entered disabled state