[ 2195.978792][T20512] br0: port 1(dummy0) entered blocking state
[ 2195.979034][T20512] br0: port 1(dummy0) entered disabled state
[ 2195.979679][T20512] dummy0: entered allmulticast mode
[ 2195.980801][T20512] dummy0: entered promiscuous mode
[ 2196.007162][T20513] br0: port 1(dummy0) entered blocking state
[ 2196.007426][T20513] br0: port 1(dummy0) entered forwarding state
[ 2198.526840][   T12] dummy0: left allmulticast mode
[ 2198.527655][   T12] dummy0: left promiscuous mode
[ 2198.527909][   T12] br0: port 1(dummy0) entered disabled state