[ 1551.842913] br0: port 1(dummy0) entered blocking state
[ 1551.842954] br0: port 1(dummy0) entered disabled state
[ 1551.842995] dummy0: entered allmulticast mode
[ 1551.843047] dummy0: entered promiscuous mode
[ 1551.845995] br0: port 1(dummy0) entered blocking state
[ 1551.846030] br0: port 1(dummy0) entered forwarding state
[ 1552.053856] dummy0: left allmulticast mode
[ 1552.053886] dummy0: left promiscuous mode
[ 1552.053910] br0: port 1(dummy0) entered disabled state