[ 2305.116165][T15000] br0: port 1(dummy0) entered blocking state
[ 2305.116351][T15000] br0: port 1(dummy0) entered disabled state
[ 2305.116509][T15000] dummy0: entered allmulticast mode
[ 2305.117863][T15000] dummy0: entered promiscuous mode
[ 2305.146284][T15001] br0: port 1(dummy0) entered blocking state
[ 2305.146602][T15001] br0: port 1(dummy0) entered forwarding state
[ 2307.381816][   T12] dummy0: left allmulticast mode
[ 2307.382449][   T12] dummy0: left promiscuous mode
[ 2307.382907][   T12] br0: port 1(dummy0) entered disabled state