[ 1697.129965] br0: port 1(dummy0) entered blocking state
[ 1697.130040] br0: port 1(dummy0) entered disabled state
[ 1697.130108] dummy0: entered allmulticast mode
[ 1697.130198] dummy0: entered promiscuous mode
[ 1697.133037] br0: port 1(dummy0) entered blocking state
[ 1697.133069] br0: port 1(dummy0) entered forwarding state
[ 1697.328592] dummy0: left allmulticast mode
[ 1697.328624] dummy0: left promiscuous mode
[ 1697.328653] br0: port 1(dummy0) entered disabled state