[ 1667.843362] br0: port 1(dummy0) entered blocking state
[ 1667.843402] br0: port 1(dummy0) entered disabled state
[ 1667.843439] dummy0: entered allmulticast mode
[ 1667.843487] dummy0: entered promiscuous mode
[ 1667.846879] br0: port 1(dummy0) entered blocking state
[ 1667.846943] br0: port 1(dummy0) entered forwarding state
[ 1668.071116] dummy0: left allmulticast mode
[ 1668.071213] dummy0: left promiscuous mode
[ 1668.071278] br0: port 1(dummy0) entered disabled state