[ 1665.133606] br0: port 1(dummy0) entered blocking state
[ 1665.133643] br0: port 1(dummy0) entered disabled state
[ 1665.133679] dummy0: entered allmulticast mode
[ 1665.133732] dummy0: entered promiscuous mode
[ 1665.137182] br0: port 1(dummy0) entered blocking state
[ 1665.137244] br0: port 1(dummy0) entered forwarding state
[ 1665.365646] dummy0: left allmulticast mode
[ 1665.365679] dummy0: left promiscuous mode
[ 1665.365716] br0: port 1(dummy0) entered disabled state