[ 1787.489583] br0: port 1(dummy0) entered blocking state
[ 1787.489620] br0: port 1(dummy0) entered disabled state
[ 1787.489652] dummy0: entered allmulticast mode
[ 1787.489699] dummy0: entered promiscuous mode
[ 1787.493316] br0: port 1(dummy0) entered blocking state
[ 1787.493377] br0: port 1(dummy0) entered forwarding state
[ 1787.749411] dummy0: left allmulticast mode
[ 1787.749439] dummy0: left promiscuous mode
[ 1787.749466] br0: port 1(dummy0) entered disabled state