[ 1738.880706] br0: port 1(dummy0) entered blocking state
[ 1738.880776] br0: port 1(dummy0) entered disabled state
[ 1738.880845] dummy0: entered allmulticast mode
[ 1738.880927] dummy0: entered promiscuous mode
[ 1738.883652] br0: port 1(dummy0) entered blocking state
[ 1738.883681] br0: port 1(dummy0) entered forwarding state
[ 1739.077318] dummy0: left allmulticast mode
[ 1739.077350] dummy0: left promiscuous mode
[ 1739.077378] br0: port 1(dummy0) entered disabled state