[ 1771.988386] br0: port 1(dummy0) entered blocking state
[ 1771.988463] br0: port 1(dummy0) entered disabled state
[ 1771.988527] dummy0: entered allmulticast mode
[ 1771.988613] dummy0: entered promiscuous mode
[ 1771.991102] br0: port 1(dummy0) entered blocking state
[ 1771.991138] br0: port 1(dummy0) entered forwarding state
[ 1772.183042] dummy0: left allmulticast mode
[ 1772.183107] dummy0: left promiscuous mode
[ 1772.183180] br0: port 1(dummy0) entered disabled state