[ 2263.525977][T20359] br0: port 1(dummy0) entered blocking state
[ 2263.526360][T20359] br0: port 1(dummy0) entered disabled state
[ 2263.526692][T20359] dummy0: entered allmulticast mode
[ 2263.527762][T20359] dummy0: entered promiscuous mode
[ 2263.563702][T20360] br0: port 1(dummy0) entered blocking state
[ 2263.564013][T20360] br0: port 1(dummy0) entered forwarding state
[ 2266.034395][   T12] dummy0: left allmulticast mode
[ 2266.034699][   T12] dummy0: left promiscuous mode
[ 2266.035046][   T12] br0: port 1(dummy0) entered disabled state