[ 1851.441612] br0: port 1(dummy0) entered blocking state
[ 1851.441658] br0: port 1(dummy0) entered disabled state
[ 1851.441697] dummy0: entered allmulticast mode
[ 1851.441750] dummy0: entered promiscuous mode
[ 1851.445300] br0: port 1(dummy0) entered blocking state
[ 1851.445366] br0: port 1(dummy0) entered forwarding state
[ 1851.703905] dummy0: left allmulticast mode
[ 1851.703977] dummy0: left promiscuous mode
[ 1851.704047] br0: port 1(dummy0) entered disabled state