[ 1717.429495] br0: port 1(dummy0) entered blocking state
[ 1717.429581] br0: port 1(dummy0) entered disabled state
[ 1717.429658] dummy0: entered allmulticast mode
[ 1717.429753] dummy0: entered promiscuous mode
[ 1717.432720] br0: port 1(dummy0) entered blocking state
[ 1717.432785] br0: port 1(dummy0) entered forwarding state
[ 1717.635156] dummy0: left allmulticast mode
[ 1717.635201] dummy0: left promiscuous mode
[ 1717.635235] br0: port 1(dummy0) entered disabled state