[ 2234.066087][ T4972] br0: port 1(dummy0) entered blocking state
[ 2234.066411][ T4972] br0: port 1(dummy0) entered disabled state
[ 2234.066699][ T4972] dummy0: entered allmulticast mode
[ 2234.067717][ T4972] dummy0: entered promiscuous mode
[ 2234.094519][ T4973] br0: port 1(dummy0) entered blocking state
[ 2234.095277][ T4973] br0: port 1(dummy0) entered forwarding state
[ 2236.482917][T10207] dummy0: left allmulticast mode
[ 2236.483824][T10207] dummy0: left promiscuous mode
[ 2236.484403][T10207] br0: port 1(dummy0) entered disabled state