[ 1596.741262] br0: port 1(dummy0) entered blocking state
[ 1596.741305] br0: port 1(dummy0) entered disabled state
[ 1596.741342] dummy0: entered allmulticast mode
[ 1596.741392] dummy0: entered promiscuous mode
[ 1596.743918] br0: port 1(dummy0) entered blocking state
[ 1596.743981] br0: port 1(dummy0) entered forwarding state
[ 1596.909085] dummy0: left allmulticast mode
[ 1596.909115] dummy0: left promiscuous mode
[ 1596.909140] br0: port 1(dummy0) entered disabled state