[ 1774.983664] br0: port 1(dummy0) entered blocking state
[ 1774.983703] br0: port 1(dummy0) entered disabled state
[ 1774.983735] dummy0: entered allmulticast mode
[ 1774.983780] dummy0: entered promiscuous mode
[ 1774.986453] br0: port 1(dummy0) entered blocking state
[ 1774.986482] br0: port 1(dummy0) entered forwarding state
[ 1775.182063] dummy0: left allmulticast mode
[ 1775.182096] dummy0: left promiscuous mode
[ 1775.182124] br0: port 1(dummy0) entered disabled state