[ 1909.636733][T15877] br0: port 1(dummy0) entered blocking state
[ 1909.636986][T15877] br0: port 1(dummy0) entered disabled state
[ 1909.637218][T15877] dummy0: entered allmulticast mode
[ 1909.638187][T15877] dummy0: entered promiscuous mode
[ 1909.665449][T15878] br0: port 1(dummy0) entered blocking state
[ 1909.665761][T15878] br0: port 1(dummy0) entered forwarding state
[ 1911.524552][   T12] dummy0: left allmulticast mode
[ 1911.525238][   T12] dummy0: left promiscuous mode
[ 1911.525455][   T12] br0: port 1(dummy0) entered disabled state