[ 1990.856565][ T2461] br0: port 1(dummy0) entered blocking state
[ 1990.856776][ T2461] br0: port 1(dummy0) entered disabled state
[ 1990.856950][ T2461] dummy0: entered allmulticast mode
[ 1990.857963][ T2461] dummy0: entered promiscuous mode
[ 1990.880575][ T2462] br0: port 1(dummy0) entered blocking state
[ 1990.880832][ T2462] br0: port 1(dummy0) entered forwarding state
[ 1992.894560][   T72] dummy0: left allmulticast mode
[ 1992.894904][   T72] dummy0: left promiscuous mode
[ 1992.895184][   T72] br0: port 1(dummy0) entered disabled state