[ 1869.499583] br0: port 1(dummy0) entered blocking state
[ 1869.499664] br0: port 1(dummy0) entered disabled state
[ 1869.499735] dummy0: entered allmulticast mode
[ 1869.499818] dummy0: entered promiscuous mode
[ 1869.503300] br0: port 1(dummy0) entered blocking state
[ 1869.503334] br0: port 1(dummy0) entered forwarding state
[ 1869.763702] dummy0: left allmulticast mode
[ 1869.763776] dummy0: left promiscuous mode
[ 1869.763866] br0: port 1(dummy0) entered disabled state