[ 2320.600814][ T1727] br0: port 1(dummy0) entered blocking state
[ 2320.601012][ T1727] br0: port 1(dummy0) entered disabled state
[ 2320.601185][ T1727] dummy0: entered allmulticast mode
[ 2320.602471][ T1727] dummy0: entered promiscuous mode
[ 2320.638860][ T1728] br0: port 1(dummy0) entered blocking state
[ 2320.639301][ T1728] br0: port 1(dummy0) entered forwarding state
[ 2323.065120][   T12] dummy0: left allmulticast mode
[ 2323.066046][   T12] dummy0: left promiscuous mode
[ 2323.066290][   T12] br0: port 1(dummy0) entered disabled state