[ 2196.405041][T29520] br0: port 1(dummy0) entered blocking state
[ 2196.405358][T29520] br0: port 1(dummy0) entered disabled state
[ 2196.405663][T29520] dummy0: entered allmulticast mode
[ 2196.406683][T29520] dummy0: entered promiscuous mode
[ 2196.432895][T29521] br0: port 1(dummy0) entered blocking state
[ 2196.433238][T29521] br0: port 1(dummy0) entered forwarding state
[ 2198.826530][   T12] dummy0: left allmulticast mode
[ 2198.827253][   T12] dummy0: left promiscuous mode
[ 2198.827875][   T12] br0: port 1(dummy0) entered disabled state