[ 1767.409359] br0: port 1(dummy0) entered blocking state
[ 1767.409397] br0: port 1(dummy0) entered disabled state
[ 1767.409429] dummy0: entered allmulticast mode
[ 1767.409475] dummy0: entered promiscuous mode
[ 1767.412889] br0: port 1(dummy0) entered blocking state
[ 1767.412949] br0: port 1(dummy0) entered forwarding state
[ 1767.671159] dummy0: left allmulticast mode
[ 1767.671196] dummy0: left promiscuous mode
[ 1767.671227] br0: port 1(dummy0) entered disabled state