[ 1989.055990][  T913] br0: port 1(dummy0) entered blocking state
[ 1989.056179][  T913] br0: port 1(dummy0) entered disabled state
[ 1989.056342][  T913] dummy0: entered allmulticast mode
[ 1989.057202][  T913] dummy0: entered promiscuous mode
[ 1989.089453][  T914] br0: port 1(dummy0) entered blocking state
[ 1989.089757][  T914] br0: port 1(dummy0) entered forwarding state
[ 1991.172019][   T12] dummy0: left allmulticast mode
[ 1991.172637][   T12] dummy0: left promiscuous mode
[ 1991.172879][   T12] br0: port 1(dummy0) entered disabled state