[ 1918.829944][ T7702] br0: port 1(dummy0) entered blocking state
[ 1918.830177][ T7702] br0: port 1(dummy0) entered disabled state
[ 1918.830414][ T7702] dummy0: entered allmulticast mode
[ 1918.831372][ T7702] dummy0: entered promiscuous mode
[ 1918.862021][ T7703] br0: port 1(dummy0) entered blocking state
[ 1918.862629][ T7703] br0: port 1(dummy0) entered forwarding state
[ 1920.845144][   T12] dummy0: left allmulticast mode
[ 1920.845354][   T12] dummy0: left promiscuous mode
[ 1920.845577][   T12] br0: port 1(dummy0) entered disabled state