[ 2460.653431][ T8504] br0: port 1(dummy0) entered blocking state
[ 2460.653642][ T8504] br0: port 1(dummy0) entered disabled state
[ 2460.653815][ T8504] dummy0: entered allmulticast mode
[ 2460.656059][ T8504] dummy0: entered promiscuous mode
[ 2460.686013][ T8505] br0: port 1(dummy0) entered blocking state
[ 2460.686467][ T8505] br0: port 1(dummy0) entered forwarding state
[ 2463.102586][   T68] dummy0: left allmulticast mode
[ 2463.103705][   T68] dummy0: left promiscuous mode
[ 2463.104017][   T68] br0: port 1(dummy0) entered disabled state