[ 1750.380532] br0: port 1(dummy0) entered blocking state
[ 1750.380597] br0: port 1(dummy0) entered disabled state
[ 1750.380666] dummy0: entered allmulticast mode
[ 1750.380745] dummy0: entered promiscuous mode
[ 1750.383508] br0: port 1(dummy0) entered blocking state
[ 1750.383536] br0: port 1(dummy0) entered forwarding state
[ 1750.566267] dummy0: left allmulticast mode
[ 1750.566302] dummy0: left promiscuous mode
[ 1750.566334] br0: port 1(dummy0) entered disabled state