[ 2309.260306][ T6664] br0: port 1(dummy0) entered blocking state
[ 2309.260528][ T6664] br0: port 1(dummy0) entered disabled state
[ 2309.260742][ T6664] dummy0: entered allmulticast mode
[ 2309.261690][ T6664] dummy0: entered promiscuous mode
[ 2309.300510][ T6665] br0: port 1(dummy0) entered blocking state
[ 2309.300796][ T6665] br0: port 1(dummy0) entered forwarding state
[ 2311.559573][   T12] dummy0: left allmulticast mode
[ 2311.560705][   T12] dummy0: left promiscuous mode
[ 2311.560981][   T12] br0: port 1(dummy0) entered disabled state