[ 2121.600171][T23983] br0: port 1(dummy0) entered blocking state
[ 2121.600416][T23983] br0: port 1(dummy0) entered disabled state
[ 2121.600640][T23983] dummy0: entered allmulticast mode
[ 2121.601734][T23983] dummy0: entered promiscuous mode
[ 2121.625198][T23984] br0: port 1(dummy0) entered blocking state
[ 2121.625470][T23984] br0: port 1(dummy0) entered forwarding state
[ 2123.604589][   T12] dummy0: left allmulticast mode
[ 2123.604907][   T12] dummy0: left promiscuous mode
[ 2123.605186][   T12] br0: port 1(dummy0) entered disabled state