[ 1608.129570] br0: port 1(dummy0) entered blocking state
[ 1608.129612] br0: port 1(dummy0) entered disabled state
[ 1608.129643] dummy0: entered allmulticast mode
[ 1608.129690] dummy0: entered promiscuous mode
[ 1608.132485] br0: port 1(dummy0) entered blocking state
[ 1608.132546] br0: port 1(dummy0) entered forwarding state
[ 1608.325121] dummy0: left allmulticast mode
[ 1608.325153] dummy0: left promiscuous mode
[ 1608.325181] br0: port 1(dummy0) entered disabled state