[ 2229.348509][ T9486] br0: port 1(dummy0) entered blocking state
[ 2229.348861][ T9486] br0: port 1(dummy0) entered disabled state
[ 2229.349245][ T9486] dummy0: entered allmulticast mode
[ 2229.350409][ T9486] dummy0: entered promiscuous mode
[ 2229.378687][ T9487] br0: port 1(dummy0) entered blocking state
[ 2229.379292][ T9487] br0: port 1(dummy0) entered forwarding state
[ 2231.907804][   T12] dummy0: left allmulticast mode
[ 2231.908548][   T12] dummy0: left promiscuous mode
[ 2231.909215][   T12] br0: port 1(dummy0) entered disabled state