[ 1885.721393] br0: port 1(dummy0) entered blocking state
[ 1885.721442] br0: port 1(dummy0) entered disabled state
[ 1885.721478] dummy0: entered allmulticast mode
[ 1885.721538] dummy0: entered promiscuous mode
[ 1885.724971] br0: port 1(dummy0) entered blocking state
[ 1885.725004] br0: port 1(dummy0) entered forwarding state
[ 1885.981762] dummy0: left allmulticast mode
[ 1885.981800] dummy0: left promiscuous mode
[ 1885.981832] br0: port 1(dummy0) entered disabled state