[ 2128.254939][T23990] br0: port 1(dummy0) entered blocking state
[ 2128.255166][T23990] br0: port 1(dummy0) entered disabled state
[ 2128.255380][T23990] dummy0: entered allmulticast mode
[ 2128.267220][T23990] dummy0: entered promiscuous mode
[ 2128.292120][T23991] br0: port 1(dummy0) entered blocking state
[ 2128.292300][T23991] br0: port 1(dummy0) entered forwarding state
[ 2130.565462][   T12] dummy0: left allmulticast mode
[ 2130.565642][   T12] dummy0: left promiscuous mode
[ 2130.565867][   T12] br0: port 1(dummy0) entered disabled state