[ 1769.603283] br0: port 1(dummy0) entered blocking state
[ 1769.603329] br0: port 1(dummy0) entered disabled state
[ 1769.603374] dummy0: entered allmulticast mode
[ 1769.603440] dummy0: entered promiscuous mode
[ 1769.606252] br0: port 1(dummy0) entered blocking state
[ 1769.606314] br0: port 1(dummy0) entered forwarding state
[ 1769.803567] dummy0: left allmulticast mode
[ 1769.803600] dummy0: left promiscuous mode
[ 1769.803629] br0: port 1(dummy0) entered disabled state