[ 1758.701419] br0: port 1(dummy0) entered blocking state
[ 1758.701460] br0: port 1(dummy0) entered disabled state
[ 1758.701480] dummy0: entered allmulticast mode
[ 1758.701522] dummy0: entered promiscuous mode
[ 1758.705151] br0: port 1(dummy0) entered blocking state
[ 1758.705178] br0: port 1(dummy0) entered forwarding state
[ 1758.960969] dummy0: left allmulticast mode
[ 1758.960998] dummy0: left promiscuous mode
[ 1758.961047] br0: port 1(dummy0) entered disabled state