[ 2258.865000][T18998] br0: port 1(dummy0) entered blocking state
[ 2258.865235][T18998] br0: port 1(dummy0) entered disabled state
[ 2258.865450][T18998] dummy0: entered allmulticast mode
[ 2258.866397][T18998] dummy0: entered promiscuous mode
[ 2258.894773][T18999] br0: port 1(dummy0) entered blocking state
[ 2258.895258][T18999] br0: port 1(dummy0) entered forwarding state
[ 2261.296072][   T12] dummy0: left allmulticast mode
[ 2261.297156][   T12] dummy0: left promiscuous mode
[ 2261.297439][   T12] br0: port 1(dummy0) entered disabled state