[ 1788.461974] br0: port 1(dummy0) entered blocking state
[ 1788.462047] br0: port 1(dummy0) entered disabled state
[ 1788.462121] dummy0: entered allmulticast mode
[ 1788.462206] dummy0: entered promiscuous mode
[ 1788.464973] br0: port 1(dummy0) entered blocking state
[ 1788.465040] br0: port 1(dummy0) entered forwarding state
[ 1788.642937] dummy0: left allmulticast mode
[ 1788.642966] dummy0: left promiscuous mode
[ 1788.642998] br0: port 1(dummy0) entered disabled state