[ 1710.696651] br0: port 1(dummy0) entered blocking state
[ 1710.696704] br0: port 1(dummy0) entered disabled state
[ 1710.696738] dummy0: entered allmulticast mode
[ 1710.696789] dummy0: entered promiscuous mode
[ 1710.700175] br0: port 1(dummy0) entered blocking state
[ 1710.700209] br0: port 1(dummy0) entered forwarding state
[ 1710.932538] dummy0: left allmulticast mode
[ 1710.932610] dummy0: left promiscuous mode
[ 1710.932702] br0: port 1(dummy0) entered disabled state