[ 1580.898935] br0: port 1(dummy0) entered blocking state
[ 1580.898985] br0: port 1(dummy0) entered disabled state
[ 1580.899020] dummy0: entered allmulticast mode
[ 1580.899065] dummy0: entered promiscuous mode
[ 1580.901927] br0: port 1(dummy0) entered blocking state
[ 1580.901993] br0: port 1(dummy0) entered forwarding state
[ 1581.090259] dummy0: left allmulticast mode
[ 1581.090292] dummy0: left promiscuous mode
[ 1581.090323] br0: port 1(dummy0) entered disabled state