[ 2217.345003][T20026] br0: port 1(dummy0) entered blocking state
[ 2217.345511][T20026] br0: port 1(dummy0) entered disabled state
[ 2217.346013][T20026] dummy0: entered allmulticast mode
[ 2217.347729][T20026] dummy0: entered promiscuous mode
[ 2217.383864][T20027] br0: port 1(dummy0) entered blocking state
[ 2217.384427][T20027] br0: port 1(dummy0) entered forwarding state
[ 2220.390074][   T12] dummy0: left allmulticast mode
[ 2220.392258][   T12] dummy0: left promiscuous mode
[ 2220.392809][   T12] br0: port 1(dummy0) entered disabled state