[ 1711.828243] br0: port 1(dummy0) entered blocking state
[ 1711.828281] br0: port 1(dummy0) entered disabled state
[ 1711.828318] dummy0: entered allmulticast mode
[ 1711.828373] dummy0: entered promiscuous mode
[ 1711.831202] br0: port 1(dummy0) entered blocking state
[ 1711.831234] br0: port 1(dummy0) entered forwarding state
[ 1712.032166] dummy0: left allmulticast mode
[ 1712.032203] dummy0: left promiscuous mode
[ 1712.032234] br0: port 1(dummy0) entered disabled state