[ 1727.296926] br0: port 1(dummy0) entered blocking state
[ 1727.296980] br0: port 1(dummy0) entered disabled state
[ 1727.297023] dummy0: entered allmulticast mode
[ 1727.297084] dummy0: entered promiscuous mode
[ 1727.300904] br0: port 1(dummy0) entered blocking state
[ 1727.300976] br0: port 1(dummy0) entered forwarding state
[ 1727.589733] dummy0: left allmulticast mode
[ 1727.589771] dummy0: left promiscuous mode
[ 1727.589802] br0: port 1(dummy0) entered disabled state