[ 1751.717068] br0: port 1(dummy0) entered blocking state
[ 1751.717136] br0: port 1(dummy0) entered disabled state
[ 1751.717201] dummy0: entered allmulticast mode
[ 1751.717283] dummy0: entered promiscuous mode
[ 1751.720677] br0: port 1(dummy0) entered blocking state
[ 1751.720708] br0: port 1(dummy0) entered forwarding state
[ 1751.973210] dummy0: left allmulticast mode
[ 1751.973237] dummy0: left promiscuous mode
[ 1751.973268] br0: port 1(dummy0) entered disabled state