[ 2181.748799][ T7858] br0: port 1(dummy0) entered blocking state
[ 2181.748990][ T7858] br0: port 1(dummy0) entered disabled state
[ 2181.749152][ T7858] dummy0: entered allmulticast mode
[ 2181.750194][ T7858] dummy0: entered promiscuous mode
[ 2181.779011][ T7859] br0: port 1(dummy0) entered blocking state
[ 2181.779380][ T7859] br0: port 1(dummy0) entered forwarding state
[ 2184.218811][   T12] dummy0: left allmulticast mode
[ 2184.219146][   T12] dummy0: left promiscuous mode
[ 2184.219487][   T12] br0: port 1(dummy0) entered disabled state