[ 1947.587977][ T1263] br0: port 1(dummy0) entered blocking state
[ 1947.588212][ T1263] br0: port 1(dummy0) entered disabled state
[ 1947.588434][ T1263] dummy0: entered allmulticast mode
[ 1947.589989][ T1263] dummy0: entered promiscuous mode
[ 1947.620267][ T1264] br0: port 1(dummy0) entered blocking state
[ 1947.620547][ T1264] br0: port 1(dummy0) entered forwarding state
[ 1949.602589][   T12] dummy0: left allmulticast mode
[ 1949.602918][   T12] dummy0: left promiscuous mode
[ 1949.603177][   T12] br0: port 1(dummy0) entered disabled state