[ 1666.570740] br0: port 1(dummy0) entered blocking state
[ 1666.570783] br0: port 1(dummy0) entered disabled state
[ 1666.570819] dummy0: entered allmulticast mode
[ 1666.570881] dummy0: entered promiscuous mode
[ 1666.573666] br0: port 1(dummy0) entered blocking state
[ 1666.573700] br0: port 1(dummy0) entered forwarding state
[ 1666.763794] dummy0: left allmulticast mode
[ 1666.763876] dummy0: left promiscuous mode
[ 1666.763940] br0: port 1(dummy0) entered disabled state