[ 2124.640714][ T9520] br0: port 1(dummy0) entered blocking state
[ 2124.640916][ T9520] br0: port 1(dummy0) entered disabled state
[ 2124.641093][ T9520] dummy0: entered allmulticast mode
[ 2124.641986][ T9520] dummy0: entered promiscuous mode
[ 2124.681229][ T9521] br0: port 1(dummy0) entered blocking state
[ 2124.681547][ T9521] br0: port 1(dummy0) entered forwarding state
[ 2126.702263][   T70] dummy0: left allmulticast mode
[ 2126.702875][   T70] dummy0: left promiscuous mode
[ 2126.703158][   T70] br0: port 1(dummy0) entered disabled state