[ 1990.802275] br0: port 1(dummy0) entered blocking state
[ 1990.802338] br0: port 1(dummy0) entered disabled state
[ 1990.802391] dummy0: entered allmulticast mode
[ 1990.802480] dummy0: entered promiscuous mode
[ 1990.806220] br0: port 1(dummy0) entered blocking state
[ 1990.806241] br0: port 1(dummy0) entered forwarding state
[ 1991.067139] dummy0: left allmulticast mode
[ 1991.067166] dummy0: left promiscuous mode
[ 1991.067189] br0: port 1(dummy0) entered disabled state