[ 1851.966662] br0: port 1(dummy0) entered blocking state
[ 1851.966710] br0: port 1(dummy0) entered disabled state
[ 1851.966748] dummy0: entered allmulticast mode
[ 1851.966798] dummy0: entered promiscuous mode
[ 1851.970609] br0: port 1(dummy0) entered blocking state
[ 1851.970647] br0: port 1(dummy0) entered forwarding state
[ 1852.258204] dummy0: left allmulticast mode
[ 1852.258262] dummy0: left promiscuous mode
[ 1852.258295] br0: port 1(dummy0) entered disabled state