[ 2171.886960][T13471] br0: port 1(dummy0) entered blocking state
[ 2171.887156][T13471] br0: port 1(dummy0) entered disabled state
[ 2171.887315][T13471] dummy0: entered allmulticast mode
[ 2171.888178][T13471] dummy0: entered promiscuous mode
[ 2171.917481][T13472] br0: port 1(dummy0) entered blocking state
[ 2171.917668][T13472] br0: port 1(dummy0) entered forwarding state
[ 2173.949970][   T12] dummy0: left allmulticast mode
[ 2173.950586][   T12] dummy0: left promiscuous mode
[ 2173.950818][   T12] br0: port 1(dummy0) entered disabled state