[ 2311.429238][ T7706] br0: port 1(dummy0) entered blocking state
[ 2311.429461][ T7706] br0: port 1(dummy0) entered disabled state
[ 2311.429626][ T7706] dummy0: entered allmulticast mode
[ 2311.430498][ T7706] dummy0: entered promiscuous mode
[ 2311.460990][ T7707] br0: port 1(dummy0) entered blocking state
[ 2311.461492][ T7707] br0: port 1(dummy0) entered forwarding state
[ 2313.356995][   T12] dummy0: left allmulticast mode
[ 2313.357541][   T12] dummy0: left promiscuous mode
[ 2313.357776][   T12] br0: port 1(dummy0) entered disabled state