[ 1670.811707] br0: port 1(dummy0) entered blocking state
[ 1670.811776] br0: port 1(dummy0) entered disabled state
[ 1670.811848] dummy0: entered allmulticast mode
[ 1670.811930] dummy0: entered promiscuous mode
[ 1670.814718] br0: port 1(dummy0) entered blocking state
[ 1670.814780] br0: port 1(dummy0) entered forwarding state
[ 1670.991958] dummy0: left allmulticast mode
[ 1670.991988] dummy0: left promiscuous mode
[ 1670.992020] br0: port 1(dummy0) entered disabled state