[ 1896.230618][ T4886] br0: port 1(dummy0) entered blocking state
[ 1896.230808][ T4886] br0: port 1(dummy0) entered disabled state
[ 1896.231521][ T4886] dummy0: entered allmulticast mode
[ 1896.232404][ T4886] dummy0: entered promiscuous mode
[ 1896.261976][ T4887] br0: port 1(dummy0) entered blocking state
[ 1896.262152][ T4887] br0: port 1(dummy0) entered forwarding state
[ 1898.368437][   T12] dummy0: left allmulticast mode
[ 1898.370883][   T12] dummy0: left promiscuous mode
[ 1898.371177][   T12] br0: port 1(dummy0) entered disabled state