[ 1944.143964][T30070] br0: port 1(dummy0) entered blocking state
[ 1944.144158][T30070] br0: port 1(dummy0) entered disabled state
[ 1944.144320][T30070] dummy0: entered allmulticast mode
[ 1944.145196][T30070] dummy0: entered promiscuous mode
[ 1944.174377][T30071] br0: port 1(dummy0) entered blocking state
[ 1944.174561][T30071] br0: port 1(dummy0) entered forwarding state
[ 1946.176828][   T12] dummy0: left allmulticast mode
[ 1946.177034][   T12] dummy0: left promiscuous mode
[ 1946.177248][   T12] br0: port 1(dummy0) entered disabled state