[ 1274.428373] br0: port 1(dummy0) entered blocking state
[ 1274.428461] br0: port 1(dummy0) entered disabled state
[ 1274.428556] dummy0: entered allmulticast mode
[ 1274.428649] dummy0: entered promiscuous mode
[ 1274.432298] br0: port 1(dummy0) entered blocking state
[ 1274.432331] br0: port 1(dummy0) entered forwarding state
[ 1274.700980] dummy0: left allmulticast mode
[ 1274.701034] dummy0: left promiscuous mode
[ 1274.701067] br0: port 1(dummy0) entered disabled state