[ 2149.060993][ T9235] br0: port 1(dummy0) entered blocking state
[ 2149.061178][ T9235] br0: port 1(dummy0) entered disabled state
[ 2149.061345][ T9235] dummy0: entered allmulticast mode
[ 2149.062225][ T9235] dummy0: entered promiscuous mode
[ 2149.087875][ T9236] br0: port 1(dummy0) entered blocking state
[ 2149.088052][ T9236] br0: port 1(dummy0) entered forwarding state
[ 2151.106822][   T12] dummy0: left allmulticast mode
[ 2151.107868][   T12] dummy0: left promiscuous mode
[ 2151.108105][   T12] br0: port 1(dummy0) entered disabled state