[ 1588.513127] br0: port 1(dummy0) entered blocking state
[ 1588.513202] br0: port 1(dummy0) entered disabled state
[ 1588.513269] dummy0: entered allmulticast mode
[ 1588.513361] dummy0: entered promiscuous mode
[ 1588.516289] br0: port 1(dummy0) entered blocking state
[ 1588.516321] br0: port 1(dummy0) entered forwarding state
[ 1588.703908] dummy0: left allmulticast mode
[ 1588.703981] dummy0: left promiscuous mode
[ 1588.704042] br0: port 1(dummy0) entered disabled state