[ 1681.932624] br0: port 1(dummy0) entered blocking state
[ 1681.932710] br0: port 1(dummy0) entered disabled state
[ 1681.932776] dummy0: entered allmulticast mode
[ 1681.932871] dummy0: entered promiscuous mode
[ 1681.935469] br0: port 1(dummy0) entered blocking state
[ 1681.935507] br0: port 1(dummy0) entered forwarding state
[ 1682.119108] dummy0: left allmulticast mode
[ 1682.119173] dummy0: left promiscuous mode
[ 1682.119205] br0: port 1(dummy0) entered disabled state