[ 1684.777035] br0: port 1(dummy0) entered blocking state
[ 1684.777113] br0: port 1(dummy0) entered disabled state
[ 1684.777183] dummy0: entered allmulticast mode
[ 1684.777268] dummy0: entered promiscuous mode
[ 1684.780224] br0: port 1(dummy0) entered blocking state
[ 1684.780257] br0: port 1(dummy0) entered forwarding state
[ 1684.978261] dummy0: left allmulticast mode
[ 1684.978298] dummy0: left promiscuous mode
[ 1684.978374] br0: port 1(dummy0) entered disabled state