[ 1777.298186] br0: port 1(dummy0) entered blocking state
[ 1777.298260] br0: port 1(dummy0) entered disabled state
[ 1777.298324] dummy0: entered allmulticast mode
[ 1777.298404] dummy0: entered promiscuous mode
[ 1777.301629] br0: port 1(dummy0) entered blocking state
[ 1777.301664] br0: port 1(dummy0) entered forwarding state
[ 1777.537985] dummy0: left allmulticast mode
[ 1777.538058] dummy0: left promiscuous mode
[ 1777.538154] br0: port 1(dummy0) entered disabled state