[ 1862.275001][T30447] br0: port 1(dummy0) entered blocking state
[ 1862.275248][T30447] br0: port 1(dummy0) entered disabled state
[ 1862.275517][T30447] dummy0: entered allmulticast mode
[ 1862.277120][T30447] dummy0: entered promiscuous mode
[ 1862.304459][T30448] br0: port 1(dummy0) entered blocking state
[ 1862.304733][T30448] br0: port 1(dummy0) entered forwarding state
[ 1864.124644][   T12] dummy0: left allmulticast mode
[ 1864.124924][   T12] dummy0: left promiscuous mode
[ 1864.125144][   T12] br0: port 1(dummy0) entered disabled state