[ 1979.392396][ T1632] br0: port 1(dummy0) entered blocking state
[ 1979.392583][ T1632] br0: port 1(dummy0) entered disabled state
[ 1979.392740][ T1632] dummy0: entered allmulticast mode
[ 1979.394597][ T1632] dummy0: entered promiscuous mode
[ 1979.429940][ T1633] br0: port 1(dummy0) entered blocking state
[ 1979.430215][ T1633] br0: port 1(dummy0) entered forwarding state
[ 1981.401516][   T12] dummy0: left allmulticast mode
[ 1981.401850][   T12] dummy0: left promiscuous mode
[ 1981.402103][   T12] br0: port 1(dummy0) entered disabled state