[ 1663.994895] br0: port 1(dummy0) entered blocking state
[ 1663.994936] br0: port 1(dummy0) entered disabled state
[ 1663.994968] dummy0: entered allmulticast mode
[ 1663.995024] dummy0: entered promiscuous mode
[ 1663.997418] br0: port 1(dummy0) entered blocking state
[ 1663.997452] br0: port 1(dummy0) entered forwarding state
[ 1664.159031] dummy0: left allmulticast mode
[ 1664.159073] dummy0: left promiscuous mode
[ 1664.159134] br0: port 1(dummy0) entered disabled state