[ 2269.999217][T21714] br0: port 1(dummy0) entered blocking state
[ 2269.999541][T21714] br0: port 1(dummy0) entered disabled state
[ 2269.999848][T21714] dummy0: entered allmulticast mode
[ 2270.000853][T21714] dummy0: entered promiscuous mode
[ 2270.036460][T21715] br0: port 1(dummy0) entered blocking state
[ 2270.037126][T21715] br0: port 1(dummy0) entered forwarding state
[ 2272.534617][   T70] dummy0: left allmulticast mode
[ 2272.535572][   T70] dummy0: left promiscuous mode
[ 2272.535944][   T70] br0: port 1(dummy0) entered disabled state