[ 1961.334389][T28559] br0: port 1(dummy0) entered blocking state
[ 1961.334633][T28559] br0: port 1(dummy0) entered disabled state
[ 1961.334876][T28559] dummy0: entered allmulticast mode
[ 1961.335900][T28559] dummy0: entered promiscuous mode
[ 1961.373110][T28560] br0: port 1(dummy0) entered blocking state
[ 1961.373352][T28560] br0: port 1(dummy0) entered forwarding state
[ 1963.322226][   T12] dummy0: left allmulticast mode
[ 1963.323062][   T12] dummy0: left promiscuous mode
[ 1963.323306][   T12] br0: port 1(dummy0) entered disabled state