[ 2017.709006][T14799] br0: port 1(dummy0) entered blocking state
[ 2017.709633][T14799] br0: port 1(dummy0) entered disabled state
[ 2017.709857][T14799] dummy0: entered allmulticast mode
[ 2017.710980][T14799] dummy0: entered promiscuous mode
[ 2017.739159][T14800] br0: port 1(dummy0) entered blocking state
[ 2017.739418][T14800] br0: port 1(dummy0) entered forwarding state
[ 2019.623709][   T68] dummy0: left allmulticast mode
[ 2019.624008][   T68] dummy0: left promiscuous mode
[ 2019.624236][   T68] br0: port 1(dummy0) entered disabled state