[ 2320.934240][T18809] br0: port 1(dummy0) entered blocking state
[ 2320.934544][T18809] br0: port 1(dummy0) entered disabled state
[ 2320.934816][T18809] dummy0: entered allmulticast mode
[ 2320.936071][T18809] dummy0: entered promiscuous mode
[ 2320.966653][T18810] br0: port 1(dummy0) entered blocking state
[ 2320.967147][T18810] br0: port 1(dummy0) entered forwarding state
[ 2323.385072][   T12] dummy0: left allmulticast mode
[ 2323.386352][   T12] dummy0: left promiscuous mode
[ 2323.386765][   T12] br0: port 1(dummy0) entered disabled state