[ 1778.400196] br0: port 1(dummy0) entered blocking state
[ 1778.400244] br0: port 1(dummy0) entered disabled state
[ 1778.400273] dummy0: entered allmulticast mode
[ 1778.400327] dummy0: entered promiscuous mode
[ 1778.404034] br0: port 1(dummy0) entered blocking state
[ 1778.404066] br0: port 1(dummy0) entered forwarding state
[ 1778.666431] dummy0: left allmulticast mode
[ 1778.666497] dummy0: left promiscuous mode
[ 1778.666537] br0: port 1(dummy0) entered disabled state