[ 2292.472936][ T8801] br0: port 1(dummy0) entered blocking state
[ 2292.473313][ T8801] br0: port 1(dummy0) entered disabled state
[ 2292.473601][ T8801] dummy0: entered allmulticast mode
[ 2292.475296][ T8801] dummy0: entered promiscuous mode
[ 2292.502893][ T8802] br0: port 1(dummy0) entered blocking state
[ 2292.503414][ T8802] br0: port 1(dummy0) entered forwarding state
[ 2295.008158][   T12] dummy0: left allmulticast mode
[ 2295.008643][   T12] dummy0: left promiscuous mode
[ 2295.009092][   T12] br0: port 1(dummy0) entered disabled state