[ 1841.097246][T21019] br0: port 1(dummy0) entered blocking state
[ 1841.097481][T21019] br0: port 1(dummy0) entered disabled state
[ 1841.097722][T21019] dummy0: entered allmulticast mode
[ 1841.098641][T21019] dummy0: entered promiscuous mode
[ 1841.121574][T21020] br0: port 1(dummy0) entered blocking state
[ 1841.121971][T21020] br0: port 1(dummy0) entered forwarding state
[ 1843.098169][   T69] dummy0: left allmulticast mode
[ 1843.099148][   T69] dummy0: left promiscuous mode
[ 1843.099378][   T69] br0: port 1(dummy0) entered disabled state