[ 1879.428633] br0: port 1(dummy0) entered blocking state
[ 1879.428710] br0: port 1(dummy0) entered disabled state
[ 1879.428779] dummy0: entered allmulticast mode
[ 1879.428859] dummy0: entered promiscuous mode
[ 1879.432512] br0: port 1(dummy0) entered blocking state
[ 1879.432544] br0: port 1(dummy0) entered forwarding state
[ 1879.705125] dummy0: left allmulticast mode
[ 1879.705156] dummy0: left promiscuous mode
[ 1879.705188] br0: port 1(dummy0) entered disabled state