[ 2259.387100][T12990] br0: port 1(dummy0) entered blocking state
[ 2259.387471][T12990] br0: port 1(dummy0) entered disabled state
[ 2259.387817][T12990] dummy0: entered allmulticast mode
[ 2259.388915][T12990] dummy0: entered promiscuous mode
[ 2259.422003][T12991] br0: port 1(dummy0) entered blocking state
[ 2259.422327][T12991] br0: port 1(dummy0) entered forwarding state
[ 2261.967235][   T72] dummy0: left allmulticast mode
[ 2261.967531][   T72] dummy0: left promiscuous mode
[ 2261.967845][   T72] br0: port 1(dummy0) entered disabled state