[ 1963.838439][ T4193] br0: port 1(dummy0) entered blocking state
[ 1963.838634][ T4193] br0: port 1(dummy0) entered disabled state
[ 1963.838796][ T4193] dummy0: entered allmulticast mode
[ 1963.839773][ T4193] dummy0: entered promiscuous mode
[ 1963.862880][ T4194] br0: port 1(dummy0) entered blocking state
[ 1963.863116][ T4194] br0: port 1(dummy0) entered forwarding state
[ 1965.721497][   T12] dummy0: left allmulticast mode
[ 1965.722354][   T12] dummy0: left promiscuous mode
[ 1965.722577][   T12] br0: port 1(dummy0) entered disabled state