[ 1864.502855][T15903] br0: port 1(dummy0) entered blocking state
[ 1864.503059][T15903] br0: port 1(dummy0) entered disabled state
[ 1864.503226][T15903] dummy0: entered allmulticast mode
[ 1864.504225][T15903] dummy0: entered promiscuous mode
[ 1864.534924][T15904] br0: port 1(dummy0) entered blocking state
[ 1864.535260][T15904] br0: port 1(dummy0) entered forwarding state
[ 1866.521113][   T12] dummy0: left allmulticast mode
[ 1866.521782][   T12] dummy0: left promiscuous mode
[ 1866.522029][   T12] br0: port 1(dummy0) entered disabled state