[ 1852.386281] br0: port 1(dummy0) entered blocking state
[ 1852.386318] br0: port 1(dummy0) entered disabled state
[ 1852.386355] dummy0: entered allmulticast mode
[ 1852.386403] dummy0: entered promiscuous mode
[ 1852.389119] br0: port 1(dummy0) entered blocking state
[ 1852.389186] br0: port 1(dummy0) entered forwarding state
[ 1852.579220] dummy0: left allmulticast mode
[ 1852.579265] dummy0: left promiscuous mode
[ 1852.579294] br0: port 1(dummy0) entered disabled state