[ 2248.989269][T25656] br0: port 1(dummy0) entered blocking state
[ 2248.990568][T25656] br0: port 1(dummy0) entered disabled state
[ 2248.990748][T25656] dummy0: entered allmulticast mode
[ 2248.991797][T25656] dummy0: entered promiscuous mode
[ 2249.013679][T25657] br0: port 1(dummy0) entered blocking state
[ 2249.013991][T25657] br0: port 1(dummy0) entered forwarding state
[ 2251.278661][   T12] dummy0: left allmulticast mode
[ 2251.279499][   T12] dummy0: left promiscuous mode
[ 2251.279839][   T12] br0: port 1(dummy0) entered disabled state