[ 2177.531022][T15871] br0: port 1(dummy0) entered blocking state
[ 2177.531262][T15871] br0: port 1(dummy0) entered disabled state
[ 2177.531477][T15871] dummy0: entered allmulticast mode
[ 2177.532391][T15871] dummy0: entered promiscuous mode
[ 2177.563442][T15872] br0: port 1(dummy0) entered blocking state
[ 2177.563799][T15872] br0: port 1(dummy0) entered forwarding state
[ 2179.526067][   T12] dummy0: left allmulticast mode
[ 2179.526657][   T12] dummy0: left promiscuous mode
[ 2179.526875][   T12] br0: port 1(dummy0) entered disabled state