[ 1611.731592] br0: port 1(dummy0) entered blocking state
[ 1611.731632] br0: port 1(dummy0) entered disabled state
[ 1611.731682] dummy0: entered allmulticast mode
[ 1611.731732] dummy0: entered promiscuous mode
[ 1611.734599] br0: port 1(dummy0) entered blocking state
[ 1611.734629] br0: port 1(dummy0) entered forwarding state
[ 1611.926801] dummy0: left allmulticast mode
[ 1611.926830] dummy0: left promiscuous mode
[ 1611.926863] br0: port 1(dummy0) entered disabled state