[ 1958.549250][T19566] br0: port 1(dummy0) entered blocking state
[ 1958.549446][T19566] br0: port 1(dummy0) entered disabled state
[ 1958.549603][T19566] dummy0: entered allmulticast mode
[ 1958.550579][T19566] dummy0: entered promiscuous mode
[ 1958.575023][T19567] br0: port 1(dummy0) entered blocking state
[ 1958.575380][T19567] br0: port 1(dummy0) entered forwarding state
[ 1960.554138][   T68] dummy0: left allmulticast mode
[ 1960.554402][   T68] dummy0: left promiscuous mode
[ 1960.554693][   T68] br0: port 1(dummy0) entered disabled state