[ 1660.817049] br0: port 1(dummy0) entered blocking state
[ 1660.817124] br0: port 1(dummy0) entered disabled state
[ 1660.817188] dummy0: entered allmulticast mode
[ 1660.817272] dummy0: entered promiscuous mode
[ 1660.820195] br0: port 1(dummy0) entered blocking state
[ 1660.820256] br0: port 1(dummy0) entered forwarding state
[ 1661.019337] dummy0: left allmulticast mode
[ 1661.019403] dummy0: left promiscuous mode
[ 1661.019466] br0: port 1(dummy0) entered disabled state