[ 1913.626220] br0: port 1(dummy0) entered blocking state
[ 1913.626266] br0: port 1(dummy0) entered disabled state
[ 1913.626298] dummy0: entered allmulticast mode
[ 1913.626346] dummy0: entered promiscuous mode
[ 1913.629785] br0: port 1(dummy0) entered blocking state
[ 1913.629817] br0: port 1(dummy0) entered forwarding state
[ 1913.889651] dummy0: left allmulticast mode
[ 1913.889681] dummy0: left promiscuous mode
[ 1913.889712] br0: port 1(dummy0) entered disabled state