[ 1616.369168] br0: port 1(dummy0) entered blocking state
[ 1616.369203] br0: port 1(dummy0) entered disabled state
[ 1616.369239] dummy0: entered allmulticast mode
[ 1616.369289] dummy0: entered promiscuous mode
[ 1616.372114] br0: port 1(dummy0) entered blocking state
[ 1616.372144] br0: port 1(dummy0) entered forwarding state
[ 1616.570077] dummy0: left allmulticast mode
[ 1616.570106] dummy0: left promiscuous mode
[ 1616.570136] br0: port 1(dummy0) entered disabled state