[ 1953.387670][ T6870] br0: port 1(dummy0) entered blocking state
[ 1953.387929][ T6870] br0: port 1(dummy0) entered disabled state
[ 1953.388147][ T6870] dummy0: entered allmulticast mode
[ 1953.389562][ T6870] dummy0: entered promiscuous mode
[ 1953.412684][ T6871] br0: port 1(dummy0) entered blocking state
[ 1953.412935][ T6871] br0: port 1(dummy0) entered forwarding state
[ 1955.351391][   T70] dummy0: left allmulticast mode
[ 1955.354668][   T70] dummy0: left promiscuous mode
[ 1955.354992][   T70] br0: port 1(dummy0) entered disabled state