[ 1880.291521][T20059] br0: port 1(dummy0) entered blocking state
[ 1880.291716][T20059] br0: port 1(dummy0) entered disabled state
[ 1880.291877][T20059] dummy0: entered allmulticast mode
[ 1880.292841][T20059] dummy0: entered promiscuous mode
[ 1880.323786][T20060] br0: port 1(dummy0) entered blocking state
[ 1880.324019][T20060] br0: port 1(dummy0) entered forwarding state
[ 1882.288972][   T12] dummy0: left allmulticast mode
[ 1882.289903][   T12] dummy0: left promiscuous mode
[ 1882.290139][   T12] br0: port 1(dummy0) entered disabled state