[ 1905.275804][T19414] br0: port 1(dummy0) entered blocking state
[ 1905.276040][T19414] br0: port 1(dummy0) entered disabled state
[ 1905.276253][T19414] dummy0: entered allmulticast mode
[ 1905.277311][T19414] dummy0: entered promiscuous mode
[ 1905.304011][T19415] br0: port 1(dummy0) entered blocking state
[ 1905.304244][T19415] br0: port 1(dummy0) entered forwarding state
[ 1907.275121][   T12] dummy0: left allmulticast mode
[ 1907.275802][   T12] dummy0: left promiscuous mode
[ 1907.276294][   T12] br0: port 1(dummy0) entered disabled state