[ 2021.967028][T11231] br0: port 1(dummy0) entered blocking state
[ 2021.967233][T11231] br0: port 1(dummy0) entered disabled state
[ 2021.967408][T11231] dummy0: entered allmulticast mode
[ 2021.968462][T11231] dummy0: entered promiscuous mode
[ 2021.997728][T11232] br0: port 1(dummy0) entered blocking state
[ 2021.998041][T11232] br0: port 1(dummy0) entered forwarding state
[ 2023.975680][   T72] dummy0: left allmulticast mode
[ 2023.975973][   T72] dummy0: left promiscuous mode
[ 2023.976200][   T72] br0: port 1(dummy0) entered disabled state