[ 1642.520625] br0: port 1(dummy0) entered blocking state
[ 1642.520662] br0: port 1(dummy0) entered disabled state
[ 1642.520687] dummy0: entered allmulticast mode
[ 1642.520735] dummy0: entered promiscuous mode
[ 1642.523489] br0: port 1(dummy0) entered blocking state
[ 1642.523520] br0: port 1(dummy0) entered forwarding state
[ 1642.702231] dummy0: left allmulticast mode
[ 1642.702264] dummy0: left promiscuous mode
[ 1642.702288] br0: port 1(dummy0) entered disabled state