[ 1672.402410] br0: port 1(dummy0) entered blocking state
[ 1672.402458] br0: port 1(dummy0) entered disabled state
[ 1672.402502] dummy0: entered allmulticast mode
[ 1672.402557] dummy0: entered promiscuous mode
[ 1672.406043] br0: port 1(dummy0) entered blocking state
[ 1672.406111] br0: port 1(dummy0) entered forwarding state
[ 1672.639312] dummy0: left allmulticast mode
[ 1672.639351] dummy0: left promiscuous mode
[ 1672.639397] br0: port 1(dummy0) entered disabled state