[ 1843.884386] br0: port 1(dummy0) entered blocking state
[ 1843.884442] br0: port 1(dummy0) entered disabled state
[ 1843.884494] dummy0: entered allmulticast mode
[ 1843.884564] dummy0: entered promiscuous mode
[ 1843.887773] br0: port 1(dummy0) entered blocking state
[ 1843.887797] br0: port 1(dummy0) entered forwarding state
[ 1844.113974] dummy0: left allmulticast mode
[ 1844.113999] dummy0: left promiscuous mode
[ 1844.114021] br0: port 1(dummy0) entered disabled state