[ 1412.181759] br0: port 1(dummy0) entered blocking state
[ 1412.181808] br0: port 1(dummy0) entered disabled state
[ 1412.181851] dummy0: entered allmulticast mode
[ 1412.181911] dummy0: entered promiscuous mode
[ 1412.184801] br0: port 1(dummy0) entered blocking state
[ 1412.184830] br0: port 1(dummy0) entered forwarding state
[ 1412.391845] dummy0: left allmulticast mode
[ 1412.391879] dummy0: left promiscuous mode
[ 1412.391908] br0: port 1(dummy0) entered disabled state