[ 1823.737370] br0: port 1(dummy0) entered blocking state
[ 1823.737454] br0: port 1(dummy0) entered disabled state
[ 1823.737519] dummy0: entered allmulticast mode
[ 1823.737600] dummy0: entered promiscuous mode
[ 1823.741230] br0: port 1(dummy0) entered blocking state
[ 1823.741262] br0: port 1(dummy0) entered forwarding state
[ 1823.986637] dummy0: left allmulticast mode
[ 1823.986669] dummy0: left promiscuous mode
[ 1823.986699] br0: port 1(dummy0) entered disabled state