[ 2319.525607][T30020] br0: port 1(dummy0) entered blocking state
[ 2319.525935][T30020] br0: port 1(dummy0) entered disabled state
[ 2319.526210][T30020] dummy0: entered allmulticast mode
[ 2319.527218][T30020] dummy0: entered promiscuous mode
[ 2319.564802][T30021] br0: port 1(dummy0) entered blocking state
[ 2319.565212][T30021] br0: port 1(dummy0) entered forwarding state
[ 2322.054303][   T12] dummy0: left allmulticast mode
[ 2322.055108][   T12] dummy0: left promiscuous mode
[ 2322.055436][   T12] br0: port 1(dummy0) entered disabled state