[ 1922.826334][T11720] br0: port 1(dummy0) entered blocking state
[ 1922.826544][T11720] br0: port 1(dummy0) entered disabled state
[ 1922.826720][T11720] dummy0: entered allmulticast mode
[ 1922.828375][T11720] dummy0: entered promiscuous mode
[ 1922.847790][T11721] br0: port 1(dummy0) entered blocking state
[ 1922.848047][T11721] br0: port 1(dummy0) entered forwarding state
[ 1924.619157][   T12] dummy0: left allmulticast mode
[ 1924.619455][   T12] dummy0: left promiscuous mode
[ 1924.619668][   T12] br0: port 1(dummy0) entered disabled state