[ 1680.422914] br0: port 1(dummy0) entered blocking state
[ 1680.422965] br0: port 1(dummy0) entered disabled state
[ 1680.422996] dummy0: entered allmulticast mode
[ 1680.423050] dummy0: entered promiscuous mode
[ 1680.425702] br0: port 1(dummy0) entered blocking state
[ 1680.425764] br0: port 1(dummy0) entered forwarding state
[ 1680.622196] dummy0: left allmulticast mode
[ 1680.622233] dummy0: left promiscuous mode
[ 1680.622301] br0: port 1(dummy0) entered disabled state