[ 2377.746100][T20768] br0: port 1(dummy0) entered blocking state
[ 2377.746485][T20768] br0: port 1(dummy0) entered disabled state
[ 2377.746845][T20768] dummy0: entered allmulticast mode
[ 2377.747937][T20768] dummy0: entered promiscuous mode
[ 2377.781351][T20769] br0: port 1(dummy0) entered blocking state
[ 2377.781715][T20769] br0: port 1(dummy0) entered forwarding state
[ 2380.425586][   T12] dummy0: left allmulticast mode
[ 2380.425900][   T12] dummy0: left promiscuous mode
[ 2380.426270][   T12] br0: port 1(dummy0) entered disabled state