[ 1657.015626] br0: port 1(dummy0) entered blocking state
[ 1657.015701] br0: port 1(dummy0) entered disabled state
[ 1657.015775] dummy0: entered allmulticast mode
[ 1657.015870] dummy0: entered promiscuous mode
[ 1657.018789] br0: port 1(dummy0) entered blocking state
[ 1657.018820] br0: port 1(dummy0) entered forwarding state
[ 1657.213680] dummy0: left allmulticast mode
[ 1657.213725] dummy0: left promiscuous mode
[ 1657.213759] br0: port 1(dummy0) entered disabled state