[ 2079.226659][ T7515] br0: port 1(dummy0) entered blocking state
[ 2079.226898][ T7515] br0: port 1(dummy0) entered disabled state
[ 2079.227161][ T7515] dummy0: entered allmulticast mode
[ 2079.228605][ T7515] dummy0: entered promiscuous mode
[ 2079.256145][ T7516] br0: port 1(dummy0) entered blocking state
[ 2079.256408][ T7516] br0: port 1(dummy0) entered forwarding state
[ 2081.207547][   T12] dummy0: left allmulticast mode
[ 2081.208451][   T12] dummy0: left promiscuous mode
[ 2081.208684][   T12] br0: port 1(dummy0) entered disabled state