[ 1683.629530] br0: port 1(dummy0) entered blocking state
[ 1683.629565] br0: port 1(dummy0) entered disabled state
[ 1683.629598] dummy0: entered allmulticast mode
[ 1683.629648] dummy0: entered promiscuous mode
[ 1683.632835] br0: port 1(dummy0) entered blocking state
[ 1683.632867] br0: port 1(dummy0) entered forwarding state
[ 1683.848910] dummy0: left allmulticast mode
[ 1683.848978] dummy0: left promiscuous mode
[ 1683.849043] br0: port 1(dummy0) entered disabled state