[ 2253.500679][T27354] br0: port 1(dummy0) entered blocking state
[ 2253.500870][T27354] br0: port 1(dummy0) entered disabled state
[ 2253.501624][T27354] dummy0: entered allmulticast mode
[ 2253.502781][T27354] dummy0: entered promiscuous mode
[ 2253.532334][T27355] br0: port 1(dummy0) entered blocking state
[ 2253.532571][T27355] br0: port 1(dummy0) entered forwarding state
[ 2255.913769][   T12] dummy0: left allmulticast mode
[ 2255.914529][   T12] dummy0: left promiscuous mode
[ 2255.914768][   T12] br0: port 1(dummy0) entered disabled state