[ 1896.854768][ T3744] br0: port 1(dummy0) entered blocking state
[ 1896.854972][ T3744] br0: port 1(dummy0) entered disabled state
[ 1896.855137][ T3744] dummy0: entered allmulticast mode
[ 1896.856385][ T3744] dummy0: entered promiscuous mode
[ 1896.877889][ T3745] br0: port 1(dummy0) entered blocking state
[ 1896.878432][ T3745] br0: port 1(dummy0) entered forwarding state
[ 1898.862338][   T12] dummy0: left allmulticast mode
[ 1898.862505][   T12] dummy0: left promiscuous mode
[ 1898.862711][   T12] br0: port 1(dummy0) entered disabled state