[ 1707.511898] br0: port 1(dummy0) entered blocking state
[ 1707.511942] br0: port 1(dummy0) entered disabled state
[ 1707.511975] dummy0: entered allmulticast mode
[ 1707.512026] dummy0: entered promiscuous mode
[ 1707.514513] br0: port 1(dummy0) entered blocking state
[ 1707.514575] br0: port 1(dummy0) entered forwarding state
[ 1707.694975] dummy0: left allmulticast mode
[ 1707.695013] dummy0: left promiscuous mode
[ 1707.695041] br0: port 1(dummy0) entered disabled state