[ 1558.912594] br0: port 1(dummy0) entered blocking state
[ 1558.912668] br0: port 1(dummy0) entered disabled state
[ 1558.912734] dummy0: entered allmulticast mode
[ 1558.912822] dummy0: entered promiscuous mode
[ 1558.915410] br0: port 1(dummy0) entered blocking state
[ 1558.915473] br0: port 1(dummy0) entered forwarding state
[ 1559.101207] dummy0: left allmulticast mode
[ 1559.101241] dummy0: left promiscuous mode
[ 1559.101310] br0: port 1(dummy0) entered disabled state