[ 1758.513349] br0: port 1(dummy0) entered blocking state
[ 1758.513410] br0: port 1(dummy0) entered disabled state
[ 1758.513442] dummy0: entered allmulticast mode
[ 1758.513503] dummy0: entered promiscuous mode
[ 1758.516919] br0: port 1(dummy0) entered blocking state
[ 1758.516950] br0: port 1(dummy0) entered forwarding state
[ 1758.779257] dummy0: left allmulticast mode
[ 1758.779291] dummy0: left promiscuous mode
[ 1758.779321] br0: port 1(dummy0) entered disabled state