[ 1596.292525] br0: port 1(dummy0) entered blocking state
[ 1596.292574] br0: port 1(dummy0) entered disabled state
[ 1596.292607] dummy0: entered allmulticast mode
[ 1596.292657] dummy0: entered promiscuous mode
[ 1596.295416] br0: port 1(dummy0) entered blocking state
[ 1596.295447] br0: port 1(dummy0) entered forwarding state
[ 1596.485481] dummy0: left allmulticast mode
[ 1596.485514] dummy0: left promiscuous mode
[ 1596.485544] br0: port 1(dummy0) entered disabled state