[ 1586.640335] br0: port 1(dummy0) entered blocking state
[ 1586.640414] br0: port 1(dummy0) entered disabled state
[ 1586.640481] dummy0: entered allmulticast mode
[ 1586.640567] dummy0: entered promiscuous mode
[ 1586.643442] br0: port 1(dummy0) entered blocking state
[ 1586.643477] br0: port 1(dummy0) entered forwarding state
[ 1586.847681] dummy0: left allmulticast mode
[ 1586.847743] dummy0: left promiscuous mode
[ 1586.847836] br0: port 1(dummy0) entered disabled state