[ 1909.444061] br0: port 1(dummy0) entered blocking state
[ 1909.444109] br0: port 1(dummy0) entered disabled state
[ 1909.444144] dummy0: entered allmulticast mode
[ 1909.444207] dummy0: entered promiscuous mode
[ 1909.447994] br0: port 1(dummy0) entered blocking state
[ 1909.448064] br0: port 1(dummy0) entered forwarding state
[ 1909.726679] dummy0: left allmulticast mode
[ 1909.726725] dummy0: left promiscuous mode
[ 1909.726810] br0: port 1(dummy0) entered disabled state