[ 1730.985039] br0: port 1(dummy0) entered blocking state
[ 1730.985092] br0: port 1(dummy0) entered disabled state
[ 1730.985121] dummy0: entered allmulticast mode
[ 1730.985170] dummy0: entered promiscuous mode
[ 1730.988548] br0: port 1(dummy0) entered blocking state
[ 1730.988618] br0: port 1(dummy0) entered forwarding state
[ 1731.248688] dummy0: left allmulticast mode
[ 1731.248735] dummy0: left promiscuous mode
[ 1731.248767] br0: port 1(dummy0) entered disabled state