[ 2174.323876][T31012] br0: port 1(dummy0) entered blocking state
[ 2174.324205][T31012] br0: port 1(dummy0) entered disabled state
[ 2174.324488][T31012] dummy0: entered allmulticast mode
[ 2174.325623][T31012] dummy0: entered promiscuous mode
[ 2174.354922][T31013] br0: port 1(dummy0) entered blocking state
[ 2174.355677][T31013] br0: port 1(dummy0) entered forwarding state
[ 2176.815224][   T63] dummy0: left allmulticast mode
[ 2176.816405][   T63] dummy0: left promiscuous mode
[ 2176.816762][   T63] br0: port 1(dummy0) entered disabled state