[ 1770.765191] br0: port 1(dummy0) entered blocking state
[ 1770.765228] br0: port 1(dummy0) entered disabled state
[ 1770.765265] dummy0: entered allmulticast mode
[ 1770.765317] dummy0: entered promiscuous mode
[ 1770.768166] br0: port 1(dummy0) entered blocking state
[ 1770.768233] br0: port 1(dummy0) entered forwarding state
[ 1770.946840] dummy0: left allmulticast mode
[ 1770.946880] dummy0: left promiscuous mode
[ 1770.946913] br0: port 1(dummy0) entered disabled state