[ 1724.595403] br0: port 1(dummy0) entered blocking state
[ 1724.595438] br0: port 1(dummy0) entered disabled state
[ 1724.595461] dummy0: entered allmulticast mode
[ 1724.595504] dummy0: entered promiscuous mode
[ 1724.598148] br0: port 1(dummy0) entered blocking state
[ 1724.598198] br0: port 1(dummy0) entered forwarding state
[ 1724.785710] dummy0: left allmulticast mode
[ 1724.785738] dummy0: left promiscuous mode
[ 1724.785792] br0: port 1(dummy0) entered disabled state