[ 1608.619930] br0: port 1(dummy0) entered blocking state
[ 1608.619968] br0: port 1(dummy0) entered disabled state
[ 1608.620012] dummy0: entered allmulticast mode
[ 1608.620063] dummy0: entered promiscuous mode
[ 1608.622909] br0: port 1(dummy0) entered blocking state
[ 1608.622974] br0: port 1(dummy0) entered forwarding state
[ 1608.815496] dummy0: left allmulticast mode
[ 1608.815587] dummy0: left promiscuous mode
[ 1608.815650] br0: port 1(dummy0) entered disabled state