[ 1787.873768] br0: port 1(dummy0) entered blocking state
[ 1787.873813] br0: port 1(dummy0) entered disabled state
[ 1787.873848] dummy0: entered allmulticast mode
[ 1787.873897] dummy0: entered promiscuous mode
[ 1787.877526] br0: port 1(dummy0) entered blocking state
[ 1787.877586] br0: port 1(dummy0) entered forwarding state
[ 1788.150424] dummy0: left allmulticast mode
[ 1788.150459] dummy0: left promiscuous mode
[ 1788.150486] br0: port 1(dummy0) entered disabled state